Class / Patent application number | Description | Number of patent applications / Date published |
073230410 | Including sample preparation or sampling | 88 |
20080209983 | Method of Analyzing Organic Chemical Substances and Apparatus for Analysis - A combination of a liquid chromatograph and a gas chromatograph was a possible measure for improving precision in analyzing organic chemical substances. However, because elutes from liquid chromatoghaphies contain water and a highly polar solvent, injection thereof into a gas chromatograph has been impossible. Consequently, to develop an analytical method which realizes that combination and an apparatus thereof has been a subject. The method of the quantitative analysis comprises subjecting a sample for analysis prepared beforehand by extracting organic chemical substances from an assay sample to fractionation by a liquid chromatograph, continuously adsorbing a fractionated elute containing a substance to be determined onto a solid-phase cartridge while conducting the fractionation, eluting this substance, which has been adsorbed on the solid-phase cartridge, with an eluent, and transferring the elute to a storage chamber of a gas chromatograph. | 09-04-2008 |
20080257013 | Method and Apparatus for Injecting Samples in Gas Chromatography - The present invention relates to a method for injecting a sample (i.e. a material to be analyzed that may be dissolved in a solvent) in a vaporization chamber or in a pre-column or a gas chromatograper, this method implying separately injecting a co-solvent, with the co-solvent being injected in advance of the sample and/or in a point in the vaporization chamber other than the sample injection point. | 10-23-2008 |
20080276686 | Method for analyzing gas components, apparatus for separating gas components and method for identifying the same - The present invention provides a method for analyzing gas components, an apparatus for separating the gas components, and a method for identifying the gas components that can provide more accurate information in distribution and consumption by classifying and identifying products that have been subjected to carbon monoxide treatment. The present invention provides a method for quantitatively analyzing gas components contained in a specimen, wherein an untreated specimen having an unchanged solid state and a prescribed weight is placed in an airtight container in which a solution is accommodated; the specimen is homogenized in the airtight container; and the gas components contained the specimen are quantitatively analyzed. | 11-13-2008 |
20090145197 | Optically Enhanced Chiral Ionic Liquids - The invention relates to the use of optically enhanced chiral ionic liquids, particularly for gas chromatography and as a reaction solvent. Specific optically enhanced chiral cationic liquids are described as is a class of optically enhanced chiral anionic liquids. | 06-11-2009 |
20090188299 | Apparatus and method for detecting volatile dissolved substance - An apparatus for detecting a volatile dissolved substance includes a sample vessel | 07-30-2009 |
20090199621 | Enhanced Sampling Device - The present invention is directed to an enhanced sampling device, herein referred to as an ESD, for enhancing the collection efficiency of the SPME method by enhancing the flow of the analytes onto the sampling fiber. The ESD includes a tubular main body, used for a sampling shroud, which directs a flow of analytes to contact the fiber during collection. One end of the main body is open and faces the sample, allowing analytes to flow into the ESD and contact the fiber. A second piece of tubing branches from the other end of the main body and becomes an outlet port, possibly leading to a pump. The ESD permits more rapid transport and absorption of the analytes to the fiber for collection. | 08-13-2009 |
20090199622 | IONIC LIQUIDS AS SOLVENTS IN HEADSPACE GAS CHROMATOGRAPHY - A method of using an ionic liquid as solvent in headspace gas chromatography. | 08-13-2009 |
20090249860 | GAS-LIQUID TWO-PHASE FLOW CHROMATOGRAPHIC ANALYZER AND METHOD OF ANALYSIS USING THE SAME ANALYZER - This invention provides a chromatographic apparatus comprising an introduction part for a carrier gas as a main mobile phase medium, a sample injection part, a separation column comprising a stationary phase formed by coating a polymeric material, a part for housing the separation column, and a detector. The sample injection part is provided between the carrier gas introduction part and the inlet of the separation column. The chromatographic apparatus further comprises a solvent introduction means for adding a liquid solvent as a second mobile phase medium to a carrier gas and mixing them together, a mechanism for regulating the amount of the carrier gas introduced and the amount of the solvent added, and a mechanism for regulating the temperature of each flow passage. A plurality of clogging liquid stoppers, of which the liquid film thickness is equal to the inner diameter of a capillary column, are partly provided at predetermined intervals within the column in a longitudinal direction of the column. In such a state that a gas phase and a liquid phase are intermittently alternated, a mobile phase medium is moved toward a column outlet and a sample is separated by utilizing distribution between the solvent liquid film of the mobile phase medium and the column stationary phase. There is also provided a chromatographic analytical method utilizing this apparatus. According to this method, a sample can be separated without using any high pressure pump. | 10-08-2009 |
20090255322 | GAS CHROMATOGRAPH - A sample vaporization unit that attains enhancing of reproducibility through fixing of the sample vaporization unit. Sample vaporization unit ( | 10-15-2009 |
20090260420 | Composite Chromatography Column - Chromatography columns are disclosed. Methods of making chromatography columns and methods of using chromatography columns are also disclosed. | 10-22-2009 |
20090260421 | AUTOMATED SYSTEMS AND METHODS FOR DETECTION OF CHEMICAL COMPOUNDS - Automated systems and methods for processing liquid test samples are generally provided. Automated systems generally include a gas and liquid separator configured for removing at least one volatile component from the test sample, a first trapping vessel in fluid communication with the gas and liquid separator, wherein the first trapping vessel contains a trapping material capable of adsorbing at least one of the at least one volatile component to provide at least one adsorbed component, and a heat source configured to heat the trapping material to a temperature sufficient to release at least one of the at least one adsorbed component from the trapping material to provide at least one released component. | 10-22-2009 |
20090266143 | Separation column for chromatographs - In a chromatograph, a separation column is disposed between an injection system and a detector. The separation column includes a bundle of capillaries which are formed of carbon nanotubes with a typical diameter of 0.5 nm to 5 nm and may number in the several hundreds. | 10-29-2009 |
20090288473 | WAY OF METHOD TRANSFER OF LIQUID CHROMATOGRAPH AND LIQUID CHROMATOGRAPH SYSTEM - When transfer a method from a measurement system of a liquid chromatograph to a measurement system under a condition of a high pressure and a high velocity, an influence due to analysis condition cannot be neglected. Further, since a transfer value obtained by calculation is a logical value, an improper result can be obtained in an actual measurement. Further, since conventional methods are optimized by such as know-how based on previous experiences, how to carry on these know-how to a new method is remained to be solved. | 11-26-2009 |
20090301170 | Arrangement for metering a gaseous sample in a carrier gas stream - An arrangement for metering a gaseous sample in a carrier gas stream has a sample gas path and a carrier gas path, both paths being connected to a carrier gas source. By introducing different pressures into the sample gas path and the carrier gas path, a metered amount is extracted from a sample slug and diverted into the carrier gas stream via a connection gas path through the carrier gas path. The sample gas path has two flow resistances in front of and behind a branch point of a connection gas path. One resistance lies between the carrier gas source and a metering unit and a gas volume of the sample gas path between the branch point of the connection gas path and the other flow resistance is dimensioned such that the sample slug only reaches the second resistance after extraction and diversion of the metered amount. | 12-10-2009 |
20100000291 | GAS CHROMATOGRAPH OVEN - A gas chromatograph oven including a housing, a capillary tube and a thermal control assembly. The housing defining a capillary tube receiving space and having at least one outlet port to permit the passage of a fluid from the capillary tube receiving space of the housing. The capillary tube is positioned in the capillary tube receiving space of the housing and has a gas inlet end connectable to a gas injector and a gas detector end connectable to a gas detector. The thermal control assembly is in fluid communication with the capillary tube receiving space of the housing and is connectable to a source of a temperature regulating fluid. | 01-07-2010 |
20100005856 | APPARATUS FOR PERFORMING DISSOLVED GAS ANALYSIS - An apparatus for performing dissolved gas analysis on electrical insulating oil. The apparatus is connectable to a first oil source and a second oil source and has a respective sample cell for each source, an analysis cell and a gas analyser. Each sample cell is selectably connectable to said analysis cell to allow fluid communication therebetween, while the other sample cell is isolated from the analysis chamber. The apparatus allows dissolved gas analysis to be performed on samples from more than one source while minimizing the effects of cross-contamination between samples. | 01-14-2010 |
20100018287 | WIRLELINE DOWNHOLE GAS CHROMATOGRAPH AND DOWNHOLE GAS CHROMATOGRAPHY METHOD - This invention relates to the devices used in the oil and gas industry. Disclosed herein is the use of a high resolution gas chromatograph in the borehole for borehole fluid type determination in real time mode. The Wireline Downhole Gas Chromatograph comprises a sample chamber with a piston position sensor, the chamber being connected through the sampling valve to the pipeline and through oil pump to hydraulic oil pressure compensation tank; an electric thermostat with a temperature sensor and a chromatograph tube installed inside the thermostat, one side of tube is connected in series through a rotating sample injector, a zeolite filter, a first check valve and a chromatograph isolating valve with a line connecting said sampling valve and said sample chamber, and the other side of tube is connected in series to a second check valve, a fraction detector, a sample portion cylinder and a second pressure gage, wherein said rotating sample injector is connected in series to a pressure reducer, a transporting medium valve, a compressed nitrogen cylinder and a first pressure gage; a bypass line with a bypass valve is connected in parallel to said rotating sample injector, said chromatograph tube and said fraction detector, and the electronic telemetry loop is connected to the output of said fraction detector. | 01-28-2010 |
20100077837 | Porous Thin Film and Process for Analyte Preconcentration and Determination - A porous thin film and a method are disclosed. The film has a generally uniform thickness and includes fused silica particles that provide multiple types of pores in the film. Particles are generally uniformly distributed on a surface and have a generally open structure that provides the film with an open interface readily accessible to fluids. The film provides for preconcentration of, e.g., heavy metals in fluid and gas samples that provides for direct determination of the analytes. | 04-01-2010 |
20100083736 | HYBRID PRECONCENTRATOR FOR DETECTION OF MATERIALS - A device having: one or more substrates in an enclosure having an inlet and an outlet; a template directed molecular imprinted material on the substrates; and a heater to heat the material. A method of: providing the above device including a sensor coupled to the outlet; flowing a gas though the device; heating the material; and flowing any vapor evolved from the material into the sensor. | 04-08-2010 |
20100107731 | CHEMICALLY MODIFIED ORGANIC CDC BASED RAPID ANALYSIS SYSTEM - A method of performing chemical analysis is disclosed. The method includes the steps of forming carbide-derived carbon (CDC) material having a plurality of pore size, surface chemistry, and surface electrical properties. An array of the surface functionalized CDCs are used for atmospheric sampling, in which chemicals in the atmosphere are adsorbed on the CDCs. The adsorbed samples are desorbed later for analysis by a plurality of individual mass spectrometers. | 05-06-2010 |
20100116022 | METHOD FOR ANALYZING ENGINE OIL DEGRADATION - The present disclosure provides a method for detecting degradation of an engine oil, by separation into a polar component and a non-polar component via admixture with a polar solvent having a polarity index greater than or equal to 5 and optionally a non-polar solvent having a polarity index of less than or equal to about 1. The polar component is analyzed for one or more degradation indicators selected from the group consisting of antioxidants, acid content, and combinations thereof. Such degradation indicators relate to a degree of engine oil degradation. The polar component may be analyzed by Gas Chromatography and Mass Spectrometry (GC/MS) for the one or more degradation indicators, which can provide a semi-quantitative level of such degradation indicator species. The non-polar component identifies combustion products that help to explain the level of degradation. | 05-13-2010 |
20100116023 | METHOD FOR EXTRACTING POLYCHLORINATED BIPHENYLS | 05-13-2010 |
20100139367 | METHOD OF ANALYSING THE HYDROCARBON COMPOUNDS IN A BITUMINOUS MATERIAL - A method of analysing the hydrocarbon compounds in a bituminous material by means of comprehensive multi-dimensional gas chromatography is disclosed. The method may be used to measure the quantity of polycyclic aromatic compounds (PACs) in a bituminous material and may be used to determine the mutagenic tendency of a bituminous material. | 06-10-2010 |
20100175457 | APPARATUS AND METHOD FOR ANALYTIC ANALYSIS UTILIZING METHANOL RINSING - An analysis system and method including a combined purge and trap (P&T) concentrator and P&T autosampler (generally, together, “the P&T system”) in conjunction with a gas chromatograph may be under control of a microprocessor that may control the various valve operations, syringe operations, cleaning operations, sample acquisition, and the like. The system includes automatic controls to clean the various components of the system such as valves and pathways, etc., using methanol, perhaps combined other cleaning techniques, between samples so that any residual contaminates remaining in a part of the system from one sample are minimized from affecting the results of an analysis of a subsequent sample. The automated methanol rinse greatly improves accuracy of sample analysis from one sample to the next. | 07-15-2010 |
20100192674 | Method for directly injecting a liquid sample into a capillary chromatography column and apparatus for implementing the method - A method for directly injecting a liquid sample into a capillary chromatography column, by which a liquid sample that includes the substance to be analyzed and the relative solvent is withdrawn from a vial with an automatic sampler having a syringe with a needle, and is then introduced into an insert, with which the injector of the chromatograph is provided, such that the terminal portion of the chromatography column is coaxially inserted into the needle to cause migration by capillarity of a part of the sample from the needle to the column. Excess sample overflowing from the needle at the moment in which the end of said column is inserted thereinto is received in a cavity, and the residence time of the end of the column within the needle is controlled. | 08-05-2010 |
20100206044 | COILED CAPILLARY FOR COMPENSATING MECHANICAL STRESS - A fluidic device comprising a capillary for conducting a fluid and a pivot arm configured for being pivoted, wherein the pivot arm supports at least a portion of the capillary, and a part of the capillary is coiled to at least partially compensate stress resulting from pivoting of the pivot arm. | 08-19-2010 |
20100212399 | GAS ANALYZER - An improved gas analyzer for analyzing the concentrations and amounts of one or more different gases in drilling mud returning from a borehole is disclosed. An oil well drilling rig re-circulates the drilling mud by continuously pumping it through a gas separation means. The gas separation means generally includes a fluid stop, a bubble jar and a dririte chamber in order to separate the gases from the drilling mud. A gas sample from these separated gases can be mixed with a carrier gas and are conveyed to gas analyzing means where the concentration of the different hydrocarbon components of the gases in the mud can be continuously measured. | 08-26-2010 |
20100218594 | Sample Collection System and Method - An apparatus or method for removing water and concentrating an analyte in solution, wherein the concentrated analyte sample is delivered directly to a vial, such as an autosampler vial that is capable of use in a gas chromatography autosampler. | 09-02-2010 |
20100307224 | PRECONCENTRATORS AND METHODS OF MAKING AND USING THE SAME - Apparatus, systems and methods are described for preconcentrators, chemical sensing systems and gas chromatographs. A preconcentrator is described that comprises a hollow enclosure containing a sorbent material. The enclosure may be a capillary tube that can be formed in to a desired shape and that may be heated. Heating may be accomplished by passing an electrical current through the capillary or other hollow enclosure form. The sorbent material can be a liquid, a solid, a porous ceramic material and/or a chemiselective polymer. The sorbent material can be coated to the inner wall of the enclosure. The hollow enclosure may be maintained in an insulated chamber. The preconcentrator acts to concentrate a vapor passed through the preconcentrator to a chemical sensing array that can detect chemicals present in the vapor. A gas passed through the hollow enclosure can provide a chemically concentrated input to a chromatographic column. | 12-09-2010 |
20110011157 | GAS CHROMATOGRAPH COLUMN WITH CARBON NANOTUBE-BEARING CHANNEL - A carbon nanostructured micro-fabricated gas chromatography column which is particularly well-suited to the surface well-site and/or the downhole analysis of natural gas in oilfield or gasfield applications (but which may also be used in non-oilfield or non-gasfield situations) is described. This micro-fabricated column integrates a micro-structured substrate such as a silicon substrate with carbon nanotubes as an active nanostructured material in a micro-channel. Benefits of the present invention include enhanced separation of alkanes and isomers, particularly below hexane (i.e., below C | 01-20-2011 |
20110011158 | SYSTEMS AND METHODS FOR CHEMICAL SAMPLING IN PARTICULATE LADEN GASEOUS ENVIRONMENTS - Chemical sampling systems and methods that can inexpensively and efficiently provide accurate chemical sampling in dusty environments are disclosed. The system can include a chemical detector, an elastomeric membrane, and a support structure for the elastomeric membrane. The gas chromatograph can have a sample inlet through which chemicals from the gaseous environment can enter the gas chromatograph. The sample inlet can be covered with the elastomeric membrane, the elastomeric membrane being configured to extract chemicals from the gaseous environment while excluding dust and other particles from passing into the gas chromatograph. The support structure can be disposed between the elastomeric membrane and the sample inlet and can provide mechanical support to the elastomeric membrane. | 01-20-2011 |
20110067482 | CALIBRATION PROCEDURES AND DEVICES FOR INVESTIGATION BIOLOGICAL SYSTEMS - Use of calibrant in extraction phase is described for quantification of components of interest in samples in laboratory application as well as in on-site monitoring. This approach is particularly useful for in-vivo investigation of living system | 03-24-2011 |
20110094290 | LOW POWER PRECONCENTRATOR FOR MICRO GAS ANALYSIS - A low power preconcentrator for use in micro gas analysis, such as gas chromatography, and a system that employs the preconcentrator is disclosed. The preconcentrator includes a reservoir that comprises a heater membrane and elements coated at least partially with an adsorbent, and ports for receiving and discharging an analyte in communication with the reservoir. At least a portion of the reservoir (e.g., a cap) is made of a material having a thermal conductivity less than about 100 W/(m·K) and/or the heater membrane is made of a material that has a temperature difference less than about 75° C. when heated. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims. | 04-28-2011 |
20110100092 | METHOD OF DETERMINING THE FUEL CONTENT IN A COMBUSTION ENGINE LUBRICATING OIL - The invention relates to a device and to a method for determining the proportion of fuel in a combustion engine lubricating oil. The device according to the invention comprises a column ( | 05-05-2011 |
20110146381 | Analytical Instrumentation, Analytical Instrument Assemblies, and Analytical Methods - Analytical instruments are provided that can include a sample inlet component with the sample inlet component including a first sampling port; a plurality of sample capturing assemblies; and a first valve assembly in fluid communication with both the sampling port and the sample capturing assemblies. The instrument can further include a sample analysis component in fluid communication with the first valve assembly of the sample inlet component; and an instrument control component in controlling communication with both the sample inlet component and the analysis component. Instrumental analysis methods are provided that can include continuously providing sample to at least one of a plurality of sample capturing assemblies; and selectively analyzing the contents of at least one of the plurality of sample capturing assemblies. | 06-23-2011 |
20110239737 | APPARATUS AND METHOD FOR QUENCHING-RESISTANT MULTIPLE FLAME PHOTOMETRIC DETECTOR - Provided herein are apparatuses and methods regarding photometric analyte detection using multiple flames, including a multiple flame photometric detector (mFPD). Such a detector may be used, for example, to detect sulfur and phosphorous in effluent streams containing hydrocarbons. | 10-06-2011 |
20110247394 | SEGREGATION SYSTEM FOR FLUID ANALYSIS - An approach for analyzing fluid samples. The approach provides for segregating a sample into groups of analytes in a sample before being passed on to an analyzer such as a detector or separator. The sample may be run through a number of collectors connected in series each of which may adsorb analytes having a certain property which is different from a property of any of the other collectors in the series. After the adsorption of analytes, the collectors may be reconnected by a valve or fluid control mechanism from their series connection to a parallel connection to their respective analyzers. The analytes may be desorbed into a pulse in each of the collectors, which goes to the respective analyzer. | 10-13-2011 |
20110271738 | ANALYTE DETECTION WITH INFRARED LIGHT - The present invention is generally directed to a method for non-contact analyte detection by selectively exciting one or more analytes of interest using an IR source optionally operated to produce pulses of light and tuned to at least one specific absorption band without significantly decomposing organic analytes and determining if the analyte is present by comparing emitted photons with an IR detector signal collected one or more times before, during, after, or any combination thereof exciting the analyte. Another embodiment of the present invention provides a method for non-contact analyte detection by selectively exciting one or more analytes of interest using one or more IR sources that are optionally operated to produce pulses of light and tuned to at least one specific wavelength without significantly decomposing organic analytes, wherein the analyte is excited sufficiently to increase the amount of analyte in the gas phase, and wherein the content of the gas is examined to detect the presence of the analyte. | 11-10-2011 |
20110283771 | Device and Method for Preparing Samples for Gas Chromatography - An apparatus ( | 11-24-2011 |
20110314900 | SAMPLING DEVICE AND METHOD - An in situ autosampling method and associated sampling device for capturing a material sample from a vessel. Methods of the present invention make use of a sampling device having an extendable sample capture element with a concave sample capture pocket located near a distal end thereof. The sample capture pocket is adapted to capture a known volume of material when the sample capture element is extended into said material. The material sample remains trapped in the sample capture pocket upon sample capture element retraction. Ports in the sample capture pocket may be placed in communication with corresponding material transfer channels extending through the sample capture element to allow for the in situ processing of a material sample, and the subsequent discharge of the sample to an analyzer or another downstream location. | 12-29-2011 |
20120085149 | Fluid Compositional Analysis by Combined Gas Chromatographic and Direct Flash Methods - A method and apparatus for providing compositional analysis of hydrocarbon fluids from well samples up to a C30+ fraction. The method includes the steps of heating a sample to a temperature of about 220° F., and collecting the liquid and gaseous fractions therefrom. Both the liquid and gaseous fractions are analyzed by gas chromatography. Additionally, the volume of the gas, and the volume, molecular weight and mass of the liquid are determined. The results are then analyzed to provide a total composition of the hydrocarbon fluids. | 04-12-2012 |
20120103063 | METHODS, DEVICES, AND SYSTEMS FOR CONTROLLING THE RATE OF GAS DEPRESSURIZATION WITHIN A VIAL CONTAINING A GAS SAMPLE - The present invention relates to methods and systems for controlling depressurization of a vial containing a gas sample. The disclosed systems and methods are employed during sampling and/or analysis of the gas sample. One exemplary method for controlling depressurization of a vial containing a gas sample includes establishing fluid communication between a sample loop of a head space sampling device and the head space of the vial. A sample gas pressure is established within the head space of the vial. The sample loop is connected in fluid communication with a lower pressure environment through a ventilation pathway. A ventilation valve within the ventilation pathway is used to vent gas from the vial through the sample loop to the lower pressure environment at a predetermined rate. Devices and systems for depressurizing a vial containing a gas sample at a predetermined rate are also disclosed. | 05-03-2012 |
20120144897 | Sample Collection System And Method - An apparatus or method for removing water and concentrating an analyte in solution, wherein the concentrated analyte sample is delivered directly to a vial, such as an autosampler vial that is capable of use in a gas chromatography autosampler. | 06-14-2012 |
20120186331 | FLOW CONTROL DEVICES AND THEIR USE WITH EXPLOSIVE CARRIER GASES - Certain embodiments described herein are directed to devices, systems and methods that are configured to control flow of an explosive carrier gas in a sampling system. In some examples, a flow control device configured to provide release of explosive carrier gas in less than an explosive amount to void space in the sampling system is described. Systems and methods using the flow control device are also disclosed. | 07-26-2012 |
20120198914 | Pressure Activated Sampling System - Screening an item for prohibited material may include multiple pressurization and rapid depressurization cycles. Screening an item for prohibiting material may include a pressurization chamber including one or more items to be screened for prohibited material and one or more filler objects. | 08-09-2012 |
20120198915 | GAS ANALYZER - An improved gas analyzer for analyzing the concentrations and amounts of one or more different gases in drilling mud returning from a borehole is disclosed. An oil well drilling rig re-circulates the drilling mud by continuously pumping it through a gas separation means. The gas separation means generally includes a fluid stop, a bubble jar and a dririte chamber in order to separate the gases from the drilling mud. A gas sample from these separated gases can be mixed with a carrier gas and are conveyed to gas analyzing means where the concentration of the different hydrocarbon components of the gases in the mud can be continuously measured. | 08-09-2012 |
20120204621 | Gas chromatography inlet liner having a colored region - A liner for mixing the sample gas and a carrier gas and delivering the gas mixture to the inlet end of a capillary tube of a gas chromatograph for analysis, comprises
| 08-16-2012 |
20120216597 | SAMPLE PRECONCENTRATOR - There is provided a sample preconcentrator. The sample preconcentrator in which a sample gas injection port is coupled to a dried gas supply source and a gas analysis system to concentrate a sample gas comprises a sample concentrating unit containing an absorbent that is composed of carbon nanotube-metal nanocomplexes; a conduit switching valve for selectively coupling the sample gas injection port to the dried gas supply source and the gas analysis system and controlling the absorption and desorption of the sample gas from the sample concentrating unit; and a plurality of conduits for connecting the sample gas injection port, the dried gas supply source, the gas analysis system, the sample concentrating unit and the conduit switching valve. | 08-30-2012 |
20120240661 | RESTRICTED LINE OF SIGHT DESIGN FOR INLET LINER - An inlet liner is provided for use in an inlet assembly of a chromatograph system. The inlet liner has an elongate tube that extends along a longitudinal axis and defines a bore that extends along the longitudinal axis and has an inner bore surface. At least one projection extends from the inner bore surface into the bore. Chromatograph systems are provided including the exemplary inlet liner(s). Methods are also provided for analyzing a sample containing a matrix in a chromatograph system having an inlet assembly connected to a chromatograph column. The method includes positioning an exemplary inlet liner in the inlet assembly, flowing the sample through the inlet liner, and adhering a portion of the matrix to a projection surface of at least one projection of the inlet liner. | 09-27-2012 |
20130055791 | SAMPLE TRAPPING METHOD AND SAMPLE TRAPPING APPARATUS - A sample trapping method and apparatus uses a sample conduit for trapping a gas sample by cooling or desorbing the gas sample by heating. The sample conduit may be cooled by arranging the sample conduit in the vicinity of, or bringing the sample conduit into contact with, a cooling part of a cooling device based on a cold storage refrigerator. | 03-07-2013 |
20130074580 | METHODS FOR QUANTITATING WATER USING IONIC LIQUID SALTS - This disclosure provides methods and devices for quantitating, separating and/or detecting water in a liquid, gas or solid sample comprising one or more chemicals, the method comprising: providing the liquid, gas or solid sample comprising water and the one or more chemicals; and exposing said liquid, gas or solid sample to at least one solid support including at least one dicationic and/or tricationic species of Formula I or II adsorbed, absorbed or immobilized on the solid support. | 03-28-2013 |
20130074581 | SAMPLING DEVICE AND METHOD OF USE THEREOF - An sampling device for capturing a material sample and a method of using said device to process said material sample in situ within the device. Embodiments of the invention may be disposed as elongate probes having extendable sample capture elements. A sample capture element of such a device may include a sample capture pocket located near a distal end thereof for capturing and trapping a sample of material. The sample capture pocket may be provided with a port for receiving material therein and a port for expelling material therefrom. These ports may be placed in communication with corresponding material transfer channels extending through the sample capture element to allow for the in situ processing of a material sample, and the subsequent discharge of the sample to an analyzer or another downstream location. | 03-28-2013 |
20130133403 | Method and Arrangement for Gas Chromatographic Analysis of a Gas Sample - The invention relates to a gas sample to be analyzed, wherein said sample is guided by means of a carrier gas through a separator unit having a downstream thermal conductivity detector providing a chromatogram having peaks for different analytes as a measurement signal. When using a thermal conductivity detector having a heated gold thread coated with a parylene F, hydrogen is used as a carrier gas, and a peak for the analyte hydrogen sulfide is generated by differentiating the chromatogram at the location of said analyte. The invention permits unlimited use of hydrogen as a carrier gas, even if the analyte is oxygen. | 05-30-2013 |
20130139568 | Injector and Method for Injecting a Sample into a Chromatography Column - An injector ( | 06-06-2013 |
20130152666 | Gas Chromatograph Column Markings to Determine Length - A gas chromatograph column is marked with a code that allows an operator or machine to accurately determine the distance between two points on the column by comparing markings at the two points on the column. The code may be human or machine readable. | 06-20-2013 |
20130167616 | VOLATIVLE COMPOUNDS TRAP DESORPTION DEVICE AND METHOD FOR DESORBING VOLATILE COMPOUNDS FROM A TRAP - A method for restoring a volatile compound from a trapping means, wherein the method includes a flowing step wherein a carrier gas flows through the trapping means, at a controlled rate, by increasing the volume of a chamber located downstream of the trapping means is disclosed. The invention also relates to a device for implementing the method. The invention allows to faithfully restore the compounds that have been previously trapped and to faithfully restore the trapped odors. | 07-04-2013 |
20130199268 | ELEMENTAL ANALYZER - In order to provide an elemental analyzer that, without providing a buffer tank, can cope with measurements of a low concentration sample to a high concentration sample on the basis of a simple configuration, the elemental analyzer is provided with: an extraction furnace | 08-08-2013 |
20130199269 | ANALYSIS OF MOLECULAR CONTAMINATION IN VACUUM ENVIRONMENTS - A pre-concentration device is provided for a gas analysis system ( | 08-08-2013 |
20130219992 | GAS CHROMATOGRAPHY DEVICE - A gas chromatography device adapted for detecting leakage of hydrogen gas without using an air pump and long piping is provided. The gas chromatography device includes: a column oven having a housing, a column disposed in the housing, and a heater heating air in the housing; a sample vaporization chamber supplying a sample to an inlet end of the column; a carrier gas supply section supplying a carrier gas to the sample vaporization chamber; a detector connected to an outlet end of the column; a controller controlling the heater and the carrier gas supply section; and a hydrogen gas detecting sensor. The carrier gas is hydrogen gas. A through hole is formed in the housing and a material that allows hydrogen to pass through but does not transmit heat is disposed in the through hole. The hydrogen gas detecting sensor is disposed near the through hole outside the housing. | 08-29-2013 |
20130233055 | GAS CHROMATOGRAPH - In gas chromatographic analysis, the consumption of a sample and the consumption of a carrier gas are reduced. In a direct injection unit ( | 09-12-2013 |
20130291623 | SEMIVOLATILE ORGANIC CHEMICAL SAMPLING AND EXTRACTION TRANSFER METHOD AND APPARATI - An apparatus for collecting semivolatile organic chemicals (SOCs) from an atmosphere comprising a housing having an inlet and an outlet and at least one diffusion denuder contained in the housing. The diffusion denuder having a plurality of capillaries coated with a stationary phase for capturing gaseous semivolatile organic compounds (SOCs). | 11-07-2013 |
20130333445 | ANALYZER FOR FLUIDS CONTAINING AN INFLAMMABLE SUBSTANCE AND CORRESPONDING METHOD - An analyzer analyzing a fluid containing at least one substance to be analyzed and at least one inflammable substance containing a source of gas to provide a flux of diluent gas, an injecting nozzle for introducing samples of the fluid into the flux of diluent gas and for producing a gaseous flux, and a detector for analyzing the gaseous flux, where the source of gas is intended to deliver a flux of diluent gas containing a material capable of supporting the combustion of the inflammable substance, preferably to deliver a flux of air, the injection nozzle is configured so as to introduce into the diluent gas samples of the fluid such that the average volume fraction of the fluid in the gaseous flux is less than 1/2,000 and preferably less than 1120,000, and the detector contains at least one microsensor for detecting the substance to be analyzed. | 12-19-2013 |
20140007652 | METHOD AND SYSTEM FOR VERIFYING THE AGE OF AN ANIMAL PROVIDING MEAT - The invention provides a method for verifying the age of an animal providing meat using volatile profiles that comprises the step of providing a sample of animal meat. The method uses one or more chemical analyses to obtain a profile of a set of volatile organic compounds from a sample of meat from an animal. The profile is fit to a mathematically discriminating function resulting. The data obtained is analyzed in order to establish a correlation between the age of the animal (tooth development) and volatiles exuded by meat. | 01-09-2014 |
20140060152 | Method for Chromatographic Analysis of a Hydrogen-Containing Gas Mixture - Method for chromatographic analysis of a hydrogen-containing gas mixture, wherein a first dose of the gas mixture is guided through a separation device using helium as a carrier gas during a first measurement pass and concentrations of separated components are measured, the concentration of the hydrogen in the gas mixture is measured and the measurement value is obtained up to an upper limit value in the range from 5% to 6%, and a second dose of the same gas mixture is guided through the separation device using the same carrier gas during a second measurement pass, wherein as compared to the first measurement pass the dose is reduced, the gas mixture is volumetrically diluted and/or the carrier-gas speed is reduced, and the hydrogen concentration is re-measured, and the measurement value obtained during the first measurement pass is verified against the measurement value obtained in the second measurement pass. | 03-06-2014 |
20140123728 | Microfluidic System And Method For Performing A Flash Separation Of A Reservoir Fluid Sample - A system for performing a flash separation of a reservoir fluid includes a sample chamber configured to hold the reservoir fluid and a flash apparatus in fluid communication with the sample chamber. The flash apparatus includes a microfluidic device configured to flash the reservoir fluid in fluid communication with the sample chamber, and a separation chamber configured to separate the flashed reservoir fluid into a liquid phase and a gaseous phase in fluid communication with the microfluidic device. The system further includes a gas receptacle configured to store the gaseous phase. A method for performing a flash separation of a reservoir fluid includes providing a reservoir fluid to a microfluidic device, urging the reservoir fluid through the microfluidic device such that the reservoir fluid is lashed within the microfluidic device, and separating a liquid phase and a gaseous phase from the flashed reservoir fluid. | 05-08-2014 |
20140157871 | SYSTEM AND METHOD FOR RAPID ANALYSIS OF POLYMER ADDITIVES - The subject technology is directed to a CO | 06-12-2014 |
20140208826 | Reservoir Sampling Tools and Methods - Techniques for sampling a subsurface reservoir include lowering a downhole logging tool comprising one or more samplers, a cleaner system, and a sample probe bit into a borehole until at least one sampler is positioned correctly in a subterranean reservoir; advancing the cleaner system into the reservoir cleaning mud filtrate and contaminated reservoir material away into a mud column; advancing the sample probe bit into the reservoir; and solvent is injected into the reservoir from the solvent reservoir. | 07-31-2014 |
20140260537 | MOLECULAR DETECTION SYSTEM AND METHODS OF USE - A system for molecular detection improves accuracy and precision of detection of molecular substances relative to other detection systems. The components, temperature, pressure, and materials used in the system allow the precise and accurate measurements of the present invention. The invention also relates to methods for using the system to detect and analyze components of a gas. | 09-18-2014 |
20140318217 | ON-LINE ANALYZER FOR VOCS AND METHOD OF USING THE SAME - The present invention relates to an on-line analyzer for VOCs in gas and method of using the same, comprising: a sampling device ( | 10-30-2014 |
20140326044 | Gas Detection Pre-treatment Device - A gas detection pre-treatment device contains an inert gas cylinder, a standard gas cylinder, an untested gas cylinder, a separating unit, a first connecting tube, a cooling unit, and an interface unit. Each of the inert gas cylinder, the standard gas cylinder, and the untested gas cylinder has an outlet pipe connecting with the first connecting tube. The first connecting pipe couples with the separating unit, and the separating unit includes a controlling channel and a separation chamber. The control channel has a first control vale, a second control valve, and a third control valve. Inlet ends of the first control valve and the second control valve couple with the first connecting pipe, an outlet end of the second control valve connects with the interface unit, an outlet end of the third control valve connects with the interface unit, and the separation chamber is covered in the cooling unit. | 11-06-2014 |
20140326045 | GAS-LIQUID CONTACT EXTRACTION METHOD AND APPARATUS - The present invention provides a method and apparatus for rapidly extracting the analyte existing in the liquid phase in analyzing an analyse “having a large partition coefficient in gas-liquid equilibrium”, “having a high water solubility”, or “having a low olfactory threshold” by a gas-liquid contact extraction method, and further provides, a method and apparatus for unmanned continuous sample introduction of the analyte to a GC or the like for a long time. In the present invention, using a gas-liquid contact extractor to which a sample liquid is continuously introduced from above and a purge gas from beneath, the analyte in the sample liquid is extracted by gas-liquid contact between the sample liquid and the purge gas. A discharge pipe is connected to the bottom of the gas-liquid contact extractor, the pipe having a liquid sump through which the sample liquid is discharged, while blocking the outflow of the purge gas from the liquid sump. | 11-06-2014 |
20140331744 | SAMPLE INTRODUCTION DEVICE AND METHOD - The present invention relates to an injector for use in gas phase analytical systems and methods comprising a metal housing, provided with a carrier gas inlet, a split outlet, a column outlet of the injector, a sample inlet, a liner, and a heater device comprising at least one coil for radio frequency inductive heating the housing with a predetermined temperature program and for providing a predetermined spatial temperature profile in the injector. The injector according to the invention allows performing gas phase analyses, especially GC analyses with reduced discrimination. Advantages of heating with a heater device comprising a coil for inductive heating include a homogeneous heating profile of the housing including parts connected thereto, with heating rates that can be varied widely. A further advantage is that the injector can be operated as a conventional S/SL injector at a predetermined temperature, or as PTV injector or thermal desorption injector with certain predetermined temperature programs. The invention also relates to a process of making an injector according to the invention, and to a process of refitting an existing S/SL injector. The invention further concerns a gas analytical system comprising an injector according to the invention, and to a process of analysing a sample with such gas analytical system. | 11-13-2014 |
20150027203 | Controlling interdetector band broadening - Methods and apparatus for controlling interdetector band broadening during the analysis of a sample injected into a chromatography system. A column flow is diluted with a dilution flow after the sample exits the chromatography system, and the diluted sample is analyzed by one or a combination of analysis instruments such as a light scattering detector, refractive index detector, an ultraviolet absorption detector. | 01-29-2015 |
20150059441 | ABSORBENT/SOLUBILIZING MATERIALS BASED ON MICROPOROUS ORGANOGELS - The present invention relates to the use of a microporous organogel for the capture of fluids by adsorption and/or for the controlled release of fluids after solubilization. The fluids are, in particular, air or water pollutants or volatile substances. The invention also relates to the use of a microporous organogel in a process for analyzing the captured fluids. The invention also relates to any fluid sensor by moulding of a microporous organa gel. | 03-05-2015 |
20150068280 | DEVICE AND METHOD FOR EXTRACTING COMPOUNDS CONTAINED IN A LIQUID SAMPLE WITH A VIEW TO ANALYSING THEM - A device for extraction of at least one analyte contained in a liquid sample, including an extraction and desorption zone of the analyte with a stationary phase as the extraction zone, a liquid supply inlet to the extraction zone, a gas supply inlet to the extraction zone, an evacuation outlet from the extraction zone that will be connected to either a collection tank, or a device for analysis of the analytes, a valve configured to connect the extraction zone to one of the supply inlets, a valve configured to connect the extraction zone to one of the evacuation outlets, a mechanism heating the valve zone such that when the extraction zone is supplied with liquid, evacuation from the extraction zone takes place to the collection tank. | 03-12-2015 |
20150107332 | MICROFLUIDIC CONTAMINANT TRAP FOR TRAPPING CONTAMINANTS IN GAS CHROMATOGRAPHY - Microfluidic contaminant traps of certain representative embodiments illustratively comprise: an inlet configured to connect directly or indirectly to a sample inlet of a gas chromatography (GC) system; an outlet configured to connect directly to an inlet of a GC column or indirectly to the GC column via another fluidic component; an interlayer comprising a channel; an upper layer disposed over and bonded to the interlayer; and a coating disposed over the channel. The coating reduces interactions of analytes from a sample provided at the inlet of the microfluidic contaminant trap with the microfluidic contaminant trap. | 04-23-2015 |
20150107333 | Solar Powered Sample Analyzing System Using a Field Deployed Analytical Instrumentation and Vacuum Jacketed Small Diameter Tubing - Provided herein is a solar powered system for a gas sampling and analysis for placement and operation remote from conventional infra-structure that utilizes a minimum of power to obtain a sample extracted from a source such as a pipeline or well-head, conditions the extracted sample, transmits the conditioned sample through vacuum jacketed tubing to an analyzer while maintaining the sample at a temperature and pressure preventing phase transition, condensation or component partitioning. | 04-23-2015 |
20150107334 | CONTINUOUS MEASUREMENT CHROMATOGRAPHY AND METHOD OF CONTINUOUS STOCHASTIC PERTURBATION CHROMATOGRAPHY - A method and system for continuous measurement chromatograph involves stochastically modulating a system variable. The sample can be introduced into a chromatography column. The sample introduction can be modulated stochastically. The sample output from the column can be detected and processed with the stochastic input to provide a sample analysis. | 04-23-2015 |
20150330953 | Gas Chromatograph System Employing Hydrogen Carrier Gas - An injection port for a gas chromatograph (GC) is operated such that, during an injection sequence, an inert gas is used for sample transfer to the analytical column while hydrogen is subsequently utilized for the majority of the analytical separation. This allows for a high degree of chromatographic efficiency, while also reducing unwanted chemical reactions involving hydrogen and/or reactive solvents in a hot injection port. Certain embodiments also provide an increased margin of safety when using hydrogen, since the total flow may be limited such that the concentration of hydrogen in the GC oven never exceeds a safety limit, such as the lower explosive limit. | 11-19-2015 |
20150346167 | FLOW RATE CONTROL MECHANISM AND GAS CHROMATOGRAPH INCLUDING FLOW RATE CONTROL MECHANISM - One end of carrier gas channel, purge gas channel and split gas channel is connected to sample gasification chamber. The other end of carrier gas channel, purge gas channel, and split gas channel is connected to a flow rate control mechanism in the form of carrier gas flow rate control block, purge gas flow rate control block and split gas flow rate control block respectively. Carrier gas flow rate control block, purge gas flow rate control block and split gas flow rate control block constitute a flow rate control unit. This reduces the possibility of leakage of gas to the outside and admixture of impurities from the outside in the flow rate control mechanism. | 12-03-2015 |
20160003785 | METHOD FOR DETERMINING DISSOLVED-HYDROGEN CONCENTRATION - The present invention is configured of: a gas control step in which a carrier gas that differs in thermal conductivity from hydrogen by a given value is chosen, and the flow rate thereof is controlled; a sample introduction step in which an aqueous solution sample is prepared and introduced into the carrier gas serving as a mobile phase and which is characterized in that the preparation of an aqueous solution sample comprises injecting an aqueous solution sample into a vessel, the inside of which is kept vacuum, to thereby conduct gas-liquid separation and collecting the gas-phase portion as a sample to be introduced; a separation step in which the hydrogen is separated from the aqueous solution sample on the basis of an adsorption/distribution equilibrium between the aqueous solution sample introduced into the mobile phase and the fixed phase of the column; a detection step; and a data processing step. | 01-07-2016 |
20160018365 | Functionalized Metal Oxides As A Stationary Phase And A Surface Template For Micro Gas Chromatography Separation Columns - The present invention provides a detector and method for detecting substances in complex mixtures. The detector includes a microfabricated preconcentrator, a separation column with an on-chip thermal conductivity detector, a controller for controlling flow and thermal management and a user interface. The thermal conductivity detector includes a first resistor located at an inlet of the separation column and a second resistor located at an outlet of the separation column. | 01-21-2016 |
20160041131 | METHODS FOR QUANTITATING WATER USING IONIC LIQUID SALTS - This disclosure provides methods and devices for quantitating, separating and/or detecting water in a liquid, gas or solid sample comprising one or more chemicals, the method comprising: providing the liquid, gas or solid sample comprising water and the one or more chemicals; and exposing said liquid, gas or solid sample to at least one solid support including at least one dicationic and/or tricationic species of Formula I or II adsorbed, absorbed or immobilized on the solid support. | 02-11-2016 |
20160103102 | TECHNIQUE FOR THERMAL DESORPTION ANALYSES OF THERMO LABILE VOLATILE COMPOUNDS - Herein is described an apparatus for adaptation to existing GC/MS systems, utilizing a splitless injector as the desorption oven with a liquid CO | 04-14-2016 |
20160103104 | INTEGRATED FLUIDIC SYSTEM FOR GAS CHROMATOGRAPHY - A method is presented for fabricating a fluidic system for a gas chromatograph. The method includes: microfabricating a portion of a fluidic system of a gas chromatograph on a substrate using a first mask; microfabricating a portion of the fluidic system of the gas chromatograph using a second mask; and microfabricating a portion of the fluidic system of the gas chromatograph using a third mask, such that the first mask, the second mask and the third mask are different from each other and the microfabricating of the fluidic system of the gas chromatograph is completed using only the first, second and third masks. A gas chromatograph wherein a microfabricated Knudsen pump is arranged to operate in a first direction to draw carrier gas into a preconcentrator and in a second direction to draw gas out of the preconcentrator. | 04-14-2016 |
20160146764 | INTEGRATED ANALYZER FOR PROCESS MONITORING DURING PROCESSING AND UPGRADING OF NATURAL GAS - A gas chromatographic method for analyzing natural gas and a natural gas upgrading system using the gas chromatographic method for analyzing natural gas. The method includes transporting the natural gas through a chiller, transporting the natural gas from the chiller to at least two gas upgrading membranes, and operating a gas chromatographic system having at least one upstream gas chromatograph and at least two downstream gas chromatographs. The at least one upstream gas chromatograph, the first downstream gas chromatograph, and the second downstream gas chromatograph all operate simultaneously and utilize the same heating oven to heat samples of natural gas. | 05-26-2016 |
20160202218 | SUPERCRITICAL FLUID-LIQUID CHROMATOGRAPH, AND ANALYSIS METHOD THEREOF | 07-14-2016 |
20160377512 | Cryofocused Sampling of Volatiles from Air Using Peltier-Assisted Capillary Microextraction - A CMV sampling device includes a thermoelectric cooler, a vacuum pump, and one or more holders for one or more capillary microextractor of volatiles (CMV) tubes. The holder thermally contacts the thermoelectric cooler and the vacuum pump is fluidly connected to the CMV tube. The CMV device is useful for sampling of volatile organic compounds from air. The sampling can be carried out rapidly to achieve a sample within the CMV tube that may be placed into a thermal desorption unit (TDU) coupled to an inlet port for introduction of the volatiles into an analytical instrument, such as, a gas chromatograph (GC), an ion mobility spectrometer (IMS), a liquid chromatograph (LC), and/or a mass spectrometer (MS) for analysis of one or more volatiles. | 12-29-2016 |