Class / Patent application number | Description | Number of patent applications / Date published |
436081000 | Zn, Cd, Hg, Sc, Y, or Actinides, or Lanthanides | 30 |
20080261314 | FLUORESCENT PROBE FOR ZINC - A compound represented by the following general formula (I) or a salt thereof: | 10-23-2008 |
20090011512 | CONDITIONING SYSTEM AND METHOD FOR USE IN THE MEASUREMENT OF MERCURY IN GASEOUS EMISSIONS - Embodiments of the invention relate generally to systems used to measure mercury in gaseous emissions. In one aspect, the invention is directed to the use of silicon carbide as material for a thermal pyrolysis unit. In another aspect, at least one of silicon nitride, silicon boride, and/or boron nitride is used as material for a thermal pyrolysis unit. In another aspect, the invention is directed to an improved pyrolyzer design, in which a thermal pyrolysis unit comprises a tailpiece that allows water to be injected at the heated exit of the thermal pyrolysis unit. In another aspect, the invention is directed to the use of a coalescing filter in a scrubbing unit. In another aspect, the invention is directed to the use of a hydrophobic filter element in a scrubbing unit. One or more of these elements may be used in a conditioning module of a continuous emissions monitoring system, for example. | 01-08-2009 |
20090017545 | Method of Determining Metal by Colorimetry and Determination Reagent - The present invention is a method for calorimetrically determining a metal in a sample using a chelating coloring agent, characterized by coexistence of a masking agent for iron, copper or nickel. Also, the present invention is a reagent for calorimetrically determining a metal in a sample using a chelating coloring agent, characterized by inclusion of a masking agent for iron, copper and/or nickel. Further, the present invention is a masking agent for iron, copper and/or nickel and a method for reducing positive errors due to iron, copper or nickel contained in a sample. | 01-15-2009 |
20090098656 | Mercury Ionic Gas Standard Generator For A Continuous Emissions Monitoring System - A mercury ionic gas standard generator for use in the continuous emissions monitoring of exhaust flue gas streams is disclosed. More specifically, the mercury ionic gas standard generator uses a reservoir being coated with an inert silicon-based coating for transporting a volume of an aqueous ionic mercury solution to a liquid mass flow controller and vaporizer. | 04-16-2009 |
20090111189 | ORGANIC AND INORGANIC MERCURY DETECTION - An apparatus and method for the detection and quantitation of metals and metalloids in a sample by derivatization are provided. In particular, the apparatus and method relates to analysis of mercury in a sample by derivatization of the inorganic and organic mercury species into elemental mercury and organo-mercury hydrides using sodium borohydride. | 04-30-2009 |
20100022011 | DETERMINATION OF EXPLOSIVES INCLUDING RDX - The present invention provides sensors and methods for determination of an analyte. The analytes may be determined by monitoring, for example, a change in an optical signal of an emissive material upon exposure to an analyte. In some embodiments, the analyte and the emissive material may interact via a chemical reaction, or other chemical, biochemical or biological interaction (e.g., recognition), to form a new emissive species. In some cases, the present invention may be used for the detection of analytes such as explosives (e.g., RDX, PETN). Methods of the present invention may be advantageous in that the high sensitivity of luminescence (e.g., fluorescence) spectroscopy can allow for the reliable detection of small changes in luminescence intensity. | 01-28-2010 |
20100099195 | Zinc-Based Screening Test and Kit for Early Diagnosis of Prostate Cancer - The present invention provides devices, kits, and methods for determining the zinc level in a fluid sample of a subject. Such determination is useful in screening for the presence of or the increased risk of having prostate cancer. | 04-22-2010 |
20100144043 | MOLECULAR FLUORESCENCE SENSOR FOR HIGHLY SENSITIVE AND SELECTIVE DETECTION OF MERCURY - A fluorescent sensor compound based on a perylene core is described and disclosed. The fluorescent sensor compound for detecting mercury can have a structure I: | 06-10-2010 |
20100210020 | METHOD FOR ANALYZING DITHIOCARBAMATE PESTICIDE USING MICROWAVE-ASSISTED THERMAL DIGESTION AND EXTRACTION - A method for analyzing a dithiocarbamate pesticide, which can ensure analytical precision with both ease and promptness is provided. The method for analyzing a dithiocarbamate pesticide comprises adding a crude drug, a preparation containing the same, or a treated product thereof, an aqueous acid catalyst solution, L-cysteine or a salt thereof, and an organic solvent for extraction to a reaction vessel, sealing the vessel, carrying out microwave irradiation, digesting a dithiocarbamate pesticide existing in the crude drug or the preparation containing the same into carbon disulfide, carrying out fractional extraction using the above organic solvent, and then analyzing the extract. | 08-19-2010 |
20100330681 | SELECTIVE DETECTION OF Hg2+ BY CALIX[4]ARENES - Provided herein are compounds, methods of making the compounds and methods for the sensitive and selective detection of Hg | 12-30-2010 |
20110117657 | SELECTIVE AND SENSITIVE DETECTION OF MERCURIC ION BY NOVEL DANSYL-APPENDED CALIX[4]ARENE MOLECULES, VIA FLUORESCENCE QUENCHING - In particular, Compounds of Formula I or Formula II, generally known as calix[4]arenes, may be prepared. The compounds may be used to test samples for the presence of Hg | 05-19-2011 |
20110165689 | METHODS, COMPOSITIONS, AND ARTICLES COMPRISING STABILIZED GOLD NANOCLUSTERS - The invention relates generally to gold nanoclusters, and in particular, fluorescent gold nanoclusters. The gold nanoclusters may be stabilized, for example, with a protein or stabilizing agent. In some cases, the gold nanoclusters may be used in methods or articles to determine the presence, absence, and/or concentration of mercuric ions in a sample. | 07-07-2011 |
20120021524 | MICROSENSOR FOR MERCURY - Methods and devices for detecting a concentration of one or more element in hydrocarbon and/or natural gas in a oil and gas field application. The device including a microstructure having a low thermal mass suspended within a channel, the microstructure includes a supporting layer and a insulating layer; a controllable thermal device in communication with the supporting layer of the microstructure, wherein the controllable thermal device is controllably heated to one or more release temperature of the one or more element; a sensing layer arranged on the insulating layer to absorb molecules of the one or more element from hydrocarbon and/or natural gas; a detecting and measuring resistance device in communication with the sensing layer for measuring the resistance changes caused by absorption of molecules of the one or more element onto the sensing layer at a first temperature and a second temperature, and storing the data on a processor. | 01-26-2012 |
20120077275 | NOVEL 8-HYDROXYQUINOLINE ACETAMIDE COMPOUND, 8-HYDROXY QUINOLINE THIOAMIDE COMPOUND AND USE THEREOF - Disclosed are a novel 8-hydroxyquinoline acetamide compound, an 8-hydroxyquinoline thioamide and use thereof. More specifically, disclosed are a novel 8-hydroxyquinoline thioamide compound suitable for use as a selective chemodosimeter that shows considerably high detection sensitivity to mercury ions, an 8-hydroxyquinoline acetamide compound as an intermediate thereof, preparation thereof, and a chemodosimeter for mercury ion-selective detection, the chemodosimeter comprising the 8-hydroxyquinoline thioamide compound. The compounds as disclosed herein exhibit considerably effective fluorescence specificity of an off-on type, detect a micromole of mercury ions from chemical and biological aqueous systems, and allow 100% desulfurization within 5 minutes, thus being considerably useful in the chemical industry. | 03-29-2012 |
20120149119 | NUCLEIC ACID BASED FLUORESCENT SENSOR FOR MERCURY DETECTION - A nucleic acid enzyme comprises an oligonucleotide containing thymine bases. The nucleic acid enzyme is dependent on both Hg | 06-14-2012 |
20120164740 | FLUORESCENT CHEMODOSIMETERS FOR MERCURY IONS BASED ON THE OXYMERCURATION OF VINYL ETHERS - The present invention is a method to produce and to use a fluorogenic chemodosimeter for the detection of mercury ions in a sample at temperature ranges from about 0° C. to 100° C. | 06-28-2012 |
20120184041 | Apparatus and Method for Detecting and/or Quantifying Compounds of Interest Present in Gaseous Form or Dissolved In A Solvent - The invention relates to an apparatus and method for detecting and/or quantifying compounds of interest present in gaseous form or dissolved in a solvent. The apparatus according to the invention includes an electrical device including two electrodes, and a device for measuring the variation in charges between the two electrodes of the electrical device. The electrical device includes a layer made of an insulating dielectric material onto which a layer of receptor molecules is grafted, and finally, a layer of semiconductor material is deposited onto the receptor molecule layer. The invention can be used in the field of detecting and/or quantifying compounds of interest present, in particular, in a gas or in a solution. | 07-19-2012 |
20130040393 | FLUORESCENCE DYE TAGGING SCHEME FOR MERCURY QUANTIFICATION AND SPECIATION - A fluorescent dye or fluorophore capable of forming complexes with mercury comprises 6,8-difluoro-7-hydroxy-2-oxo-2H-chromene-3-carboxylate amide, wherein the amide is formed by reacting the succinimidyl ester (Pacific Blue™) with an amino acid containing a thiol group, such as cysteine or glutathione. Mercury complexes of the fluorophore fluoresce when excited by a UV or violet laser diode, and the detected intensity can be calibrated to quantify the concentration of mercury in a sample reacted with the fluorophore. | 02-14-2013 |
20130071936 | FRET-BASED ZINC(II) ION INDICATOR - The present invention is directed to an indicator for targeting zinc(II) ions in a composition, e.g., a biological sample such as for targeting mitochondrial zinc (II) ions. The present invention is directed to a method for preparing an indicator that targets mitochondrial zinc(II), and a method of measuring the concentration of mitochondrial zinc(II) ions. | 03-21-2013 |
20140106461 | MERCURY MONITORING SYSTEMS AND METHODS - Mercury monitoring system and methods for detecting an amount of total mercury in a liquid sample include a sample inlet for receiving a liquid sample, a heating chamber in direct fluid communication with the sample inlet, an oxidation chamber for oxidizing the evaporated sample, a mercury amalgamator for trapping elemental mercury, and may include a mercury detector. | 04-17-2014 |
20150301008 | Method for ion detection - A method for detecting a chemical species includes providing in a vessel an acidic sample containing an ionic chemical species to be measured where a substrate of the species to be formed is ionizable by radiant energy provided by a photoionization detector in detector system and a headspace above the acidic sample, adding a preselected reducing agent to the aqueous sample and forming an ionizable chemical gas species in the aqueous sample where the ionizable chemical gas species evolves out of the aqueous sample and into the headspace forming a gas sample, moving the gas sample containing the ionizable chemical gas species from the headspace of the vessel out of the vessel and through a precolumn, and moving the gas sample containing the ionizable chemical gas species from the precolumn into one of (1) a detector system or (2) an oxygen-retaining column before the detector system. | 10-22-2015 |
20160041134 | CHEMICAL DETECTION OF SUBSTANCES BY UTILIZING A SAMPLE MEDIUM IMPREGNATED WITH SOLID TEST CHEMICALS - In some embodiments, the present disclosure pertains to substance detecting assemblies that include: (1) a sample medium (e.g., filter paper); and (2) a solid test chemical (e.g., zinc) impregnated with the sample medium. In some embodiments, the present disclosure pertains to methods of A making an assembly for detecting a substance by: (1) providing a sample medium; (2) providing a solid test chemical; and (3) impregnating the sample medium with the solid test chemical. In further embodiments, the present disclosure pertains to methods for detecting a substance by: (1) collecting the substance on a sample medium that is impregnated with a solid test chemical; and (2) initiating a reaction of the substance with the solid test chemical on the sample medium to generate a color that corresponds to the substance. In some embodiments, the sample medium is then inserted into a chemical detection unit for the detection of the substance. | 02-11-2016 |
20160097754 | MERCURY SENSOR AND METHODS OF USE - The invention relates to non-fluorescent or low-fluorescent compounds for contact with mercury ions to produce fluorescent compounds as a detector for mercury. The fluorescence produced by the contact of the non-fluorescent or low-fluorescent compounds with mercury ions has an intensity greater than the intensity produced by the contact of the non-fluorescent or low-fluorescent compounds with other metals. The fluorescent compounds may be used as sensors/detectors for mercury ions in various samples. Methods for detecting and calculating the concentration of mercury ions in samples are also disclosed. | 04-07-2016 |
20160178595 | DETECTING STANNOUS IONS | 06-23-2016 |
436082000 | Lanthanide or Actinide | 6 |
20100197031 | FUNCTIONALIZED EXPANDED PORPHYRINS - Disclosed are functionalized expanded porphyrins that can be used as spectrometric sensors for high-valent actinide cations. The disclosed functionalized expanded porphyrins have the advantage over unfunctionalized systems in that they can be immobilized via covalent attachment to a solid support comprising an inorganic or organic polymer or other common substrates. Substrates comprising the disclosed functionalized expanded porphyrins are also disclosed. Further, disclosed are methods of making the disclosed compounds (immobilized and free), methods of using them as sensors to detect high valent actinides, devices that comprise the disclosed compounds, and kits. | 08-05-2010 |
20110065195 | Terpyridine-substituted compounds and related selective detection methods - Terpyridine-substituted compounds, compositions and/or related methods, as can be used to selectively detect a wide range of analytes. | 03-17-2011 |
20120252128 | LABEL-FREE FUNCTIONAL NUCLEIC ACID SENSORS FOR DETECTING TARGET AGENTS - A general methodology to design label-free fluorescent functional nucleic acid sensors using a vacant site approach and an abasic site approach is described. In one example, a method for designing label-free fluorescent functional nucleic acid sensors (e.g., those that include a DNAzyme, aptamer or aptazyme) that have a tunable dynamic range through the introduction of an abasic site (e.g., dSpacer) or a vacant site into the functional nucleic acids. Also provided is a general method for designing label-free fluorescent aptamer sensors based on the regulation of malachite green (MG) fluorescence. A general method for designing label-free fluorescent catalytic and molecular beacons (CAMBs) is also provided. The methods demonstrated here can be used to design many other label-free fluorescent sensors to detect a wide range of analytes. Sensors and methods of using the disclosed sensors are also provided. | 10-04-2012 |
20130217135 | COMPOUND FOR FORMING FLUORESCENT URANIUM COMPLEX, METHOD FOR SYNTHESIZING THEREOF, FLUORESCENT PROBE FOR DETECTING URANIUM AND METHOD FOR ANALYZING URANIUM - Disclosed is a compound suitable for use as a fluorescent probe for the detection of uranium. The compound enables the qualitative and quantitative analysis of uranium present in waste samples using less expensive apparatuses. The compound of the present invention has the structure shown by the following formula. | 08-22-2013 |
20140080217 | Uranium Analysis Using Luminescence Enhancing Oxidant and Oxidant Composition - According to the present invention, there is provided a method of determining a concentration of uranium including: a) a primary measuring step of measuring luminescence intensity or luminescence attenuation of uranium (VI) of an oxidant added sample obtained by adding an oxidant composition to a detection target sample; b) a secondary measuring step of adding different volumes of standard solution containing uranium (VI) having a predetermined concentration to a plurality of oxidant added samples, respectively, and then measuring luminescence intensity or luminescence attenuation of uranium (VI) contained in each standard solution added sample; and c) a calculating step of calculating a concentration of uranium (VI) contained in the detection target sample by a standard addition method based on the primary and secondary measurements. With the method for determining a concentration of uranium according to the present invention, the concentration of uranium may be further rapidly and accurately analyzed. | 03-20-2014 |
20160178596 | PROBE AND METHOD FOR DETECTING METAL IONS AND CHEMICAL/BIOCHEMICAL MOLECULES | 06-23-2016 |