Class / Patent application number | Description | Number of patent applications / Date published |
436128000 | Carbonyl, ether, aldehyde or ketone containing | 50 |
20080220534 | Nanoporous Material for Aldehydes with Direct Optical Transduction - The invention concerns a method for detecting and/or assaying and/or capturing at least one aldehyde, preferably formaldehyde, including a step of contacting a gas stream with a material comprising a nonporous metal oxide sol-gel matrix, said matrix containing at least one probe molecule bearing at least one reactive function capable of reacting with at least one aldehyde function. The invention also concerns the material for implementing said method, a method for preparing same, and sensors incorporating such materials. | 09-11-2008 |
20100129923 | TANDEM MASS SPECTROMETRY FOR DETECTING AND/OR SCREENING FOR CONDITIONS ASSOCIATED WITH ALTERED STEROLS - Embodiments of the present invention provide for detecting and/or screening for conditions associated with altered sterols by dehvatization of sterols to provide suitable sensitivity and selectivity of detection using tandem mass spectrometry with electrospray ionization. Such testing may be performed to detect and/or screen for conditions such as Smith-Lemli-Opitz syndrome, familial hypercholesterolemia, and cerebrotendinous xanthomatosis, or certain bile acid disorders. | 05-27-2010 |
20110033945 | COLORIMETRIC ASSAY FOR PYRETHROID INSECTICIDES - The invention relates to an assay to test for pyrethroids in a sample. The assay is particularly useful for testing material treated with pyrethroids, such as bed netting and the like. | 02-10-2011 |
20120156794 | METHOD FOR THE EXTRACTION AND DETECTION OF FAT-SOLUBLE COMPONENTS FROM BIOLOGICAL MATERIALS - The invention relates to a method for analysis of fat-soluble components, in particular fat-soluble dyes, from biological materials, in particular foods and feeds, having facilitated extraction of the fat-soluble components from the biological materials with use of suitable dilution solutions and of the extractability using pertinent organic solvents or organic solvent mixtures and also an enrichment and separation method, with subsequent digital evaluation and documentation. It is proposed to treat the biological materials first with a dilution medium which makes the fat-soluble components more readily extractable from the complex biological matrix and subsequently with at least one organic solvent which extracts the components; the substances extracted into the organic supernatant are subsequently chromatographically enriched and separated and then visually assessed and/or measured. | 06-21-2012 |
20120231548 | BREATH KETONE DETECTOR - Ketoacidosis is an extreme and uncontrolled form of ketosis, which is a normal response to prolonged fasting. Embodiments of this invention test the ketone level of a patient by measuring the ketone bodies in breath condensation. Some embodiments include a device for medical testing comprising a hollow container, comprising powder mixture of sodium nitroferricyanide, ammonium sulfate and silica and a liquid including an ammonium hydroxide solution. | 09-13-2012 |
20120252129 | PRE-CONCENTRATOR AND METHOD OF USING THE SAME - A chemical pre-concentrator is provided having a support structure, an airflow conduit, and a layer of a reactive chemical compound on a surface of the support structure is used for collecting and pre-concentrating at least one chemical analyte from a dilute sample. A method of concentrating a gaseous sample is provide that includes exposing the chemical pre-concentrator with a dilute gaseous sample that contains at least one chemical analyte; and forming a conjugate of the at least one chemical analyte. A method of diagnosing a disease state in a mammalian patient is provided using the chemical pre-concentrator. | 10-04-2012 |
20130034910 | DIAGNOSING, PROGNOSING AND MONITORING MULTIPLE SCLEROSIS - The present invention provides a system and method for diagnosing, monitoring or prognosing Multiple Sclerosis at different stages as well as affording the prediction of disease activity and response to a treatment regimen, using at least one sensor comprising carbon nanotubes or metal nanoparticles, each coated with various organic coatings in conjunction with a pattern recognition algorithm. | 02-07-2013 |
20130130398 | SENSORS AND METHODS FOR DETECTING PEROXIDE BASED EXPLOSIVES - Methods, compositions, and systems for detecting explosives is disclosed and described. A sensor for detecting explosives can comprise a porous hydrophilic material modified with a titanium oxo compound having the following structure (I) where L is a ligand. Additionally, the porous hydrophilic material can be capable of detecting hydrogen peroxide vapor by complexing the titanium oxo compound and the hydrogen peroxide to provide a color change. | 05-23-2013 |
20140004616 | SPECIFIC ANALYSIS OF KETONE AND ALDEHYDE ANALYTES USING REAGENT COMPOUNDS, LABELING STRATEGIES, AND MASS SPECTROMETRY WORKFLOW | 01-02-2014 |
20140017800 | METHOD AND APPARATUS FOR THE IDENTIFICATION OF ALDEHYDES - A method for detecting the presence of an aldehyde in a sample comprises steps of exposing the sample at room temperature to a test medium to catalyze the formation of optically detectable quantities of a product within a time period of no more than 60 minutes and without applying any external heat to the sample or test medium, the test medium comprising a indicator that is a nucleophilic compound having acidic protons at the nucleophilic center and at least one acid, and measuring the optical changes that occur as a result of the catalysis. | 01-16-2014 |
20140038302 | METHODS AND KITS FOR DETECTION OF COENZYME Q10 - The invention provides methods for rapid and quantitative extraction and detection of coenzyme Q10 in a sample readily adaptable to high throughput screening methods. The invention further provides reagents and kits for practicing the methods of the invention. | 02-06-2014 |
20140356972 | METHOD AND APPARATUS FOR THE IDENTIFICATION OF ALDEHYDES - An apparatus for estimating the concentration of an aldehyde comprising a solid medium; a nucleophilic aromatic compound held on the medium; and an acid held on the medium and a method for detecting the presence of an aldehyde in a sample with the apparatus in which the sample is exposed at room temperature to a test medium to catalyze the formation of optically detectable quantities of a product within a time period of no more than 60 minutes and without applying any external heat to the sample or test medium, the test medium comprising a indicator that is a nucleophilic compound having acidic protons at the nucleophilic center and at least one acid, and measuring the optical changes that occur as a result of the catalysis. | 12-04-2014 |
20150031140 | COMPOSITION OF PHOTOCATALYST AND METHOD OF USING THE SAME FOR DEGRADATION OF FUEL WASTE IN CONTAMINATED WATER - The present disclosure relates to a novel photocatalyst composition and a process of using the photocatalyst for the photocatalytic degradation of methyl tertiary-butyl ether (MTBE) in water. Palladium doped nano zinc oxide photocatalyst was prepared by zinc nitrate hexahydrate and an ammonium carbonate and the photocatalyst composition demonstrated more than 90-99% degradation of MTBE at room temperatures in a photo catalytic reaction conducted in an oxygen saturated aqueous medium. | 01-29-2015 |
20150031141 | COMPOSITION AND METHOD OF USING A CATALYST FOR PHOTO-CATALYTIC DEGRADATION OF CONTAMINANT IN WATER - This invention relates to the preparation and making use of a catalyst for the photo-catalytic degradation of methyl tertiary butyl ether (MTBE) in water. Palladium doped on composite Cerium oxide-zinc oxide (Ce | 01-29-2015 |
20150300955 | SENSOR FOR MONITORING FOR THE PRESENCE AND MEASUREMENT OF AQUEOUS ALDEHYDE BIOCIDES - An analytical system and method periodically monitoring an injection water distribution pipeline for the presence and concentration of formaldehyde or other aldehyde-functional biocide includes pumps, one of which provides a predetermined volume of injection water drawn from the pipeline at a sampling point and the other a predetermined volume of a reagent, preferably a buffered solution of dimedone, from a reagent storage vessel which are mixed and then heated in a chamber to a predetermined temperature to promote formation of any reaction products. The heated reaction mixture is passed to a detection cell and exposed to light of predetermined wavelength which, in accordance with the Hantzsch reaction, molecules having an aldehyde functional group that reacted with dimedone produce a fluorescence-emitting reaction product, the intensity of which is measured and compared to data previously obtained from standard aldehyde-containing solutions. | 10-22-2015 |
20150306572 | PROCESS OF USING A CATALYST FOR PHOTO-CATALYTIC DEGRADATION OF CONTAMINANT IN WATER - This invention relates to the process of using a catalyst for the photo-catalytic degradation of methyl tertiary butyl ether (MTBE) in water. | 10-29-2015 |
20150377859 | ANALYSIS CARTRIDGE AND METHOD FOR USING SAME - An analysis cartridge the includes a main body portion and a filter assembly. The main body portion includes an upper portion that defines an upper chamber and a lower portion that defines a fluid chamber. The filter assembly is movable along a filter assembly path between a first position and a second position. The filter assembly has an opening defined therethrough. In the first position, the opening partially defines the upper chamber and in the second position the opening partially defines the fluid chamber. | 12-31-2015 |
20150377868 | BREATH ANALYSIS SYSTEM - A breath analysis system that includes a handle assembly with an analysis cartridge on an upper end thereof. The handle includes a main body portion with a pressure opening and a pressure transducer therein. The analysis cartridge includes a main body portion with an upper portion that defines a breath chamber, a lower portion that defines a fluid chamber and a filter assembly that is movable between a breath capture position and an analysis position. The filter assembly has an opening defined therethrough. In the breath capture position, the opening partially defines the breath chamber and in the analysis position the opening partially defines the fluid chamber. The system also includes an analysis device with a case, a door, a controller that controls the motor and a fluorescence detection assembly and a rotation assembly positioned in the case interior. The rotation assembly includes a shroud with a funnel portion for receiving the analysis cartridge. | 12-31-2015 |
436129000 | Carboxylic acid | 21 |
20090298188 | MEASUREMENT OF A DICARBOXYLATE IN URINE SAMPLES AS A NOVEL BIOMARKER OF KIDNEY DAMAGE - The present invention relates in general to the discovery of urinary succinate as a novel biomarker of kidney disease. More specifically, the invention provides for the measurement of succinate in urine samples that has great potential for the easy and early diagnosis of kidney damage and would allow early prediction of kidney disease and therapeutic intervention. | 12-03-2009 |
20100136705 | METHOD FOR MEASURING CONCENTRATION OF PEROXYCARBOXYLIC ACID AND APPARATUS THEREFOR - A method for measuring only a concentration of a peroxycarboxylic acid in an equilibrium mixture containing peroxycarboxylic acid and hydrogen peroxide, comprising the following steps a) and b); a) adding potassium iodide to the equilibrium mixture to cause the generation of iodine and providing the resulting mixture as a measurement sample; and b) measuring the amount of light that goes through the measurement sample to determine only the concentration of a peroxycarboxylic acid. | 06-03-2010 |
20100304495 | Method for determining fruiting body and mycelium of Antrodia cinnamomea and Antrodia salmonea - This invention relates to a method for determining fruiting body and mycelium of | 12-02-2010 |
20110033946 | DETECTION OF SHORT-CHAIN FATTY ACIDS IN BIOLOGICAL SAMPLES - Described herein is a method of detecting and/or quantifying analytes, such as short-chain fatty acids. Analysis for the presence and/or quantity of the small molecule can be performed on a biological sample from a subject. In some embodiments, a liquid chromatography/mass spectrometry (LC-MS/MS) instrumentation is combined with a solid-phase extraction (SPE). Methods of derivatization can also be incorporated with LC-MS/MS and SPE instrumentation to detect and quantify target analytes. In addition to derivation, methods of reconstituting derivatized molecules can also be incorporated with LC-MS/MS and SPE instrumentation to detect and quantify target analytes. | 02-10-2011 |
20110306144 | MASS SPECTROMETRIC DETERMINATION OF DERIVATIZED METHYLMALONIC ACID - The invention relates to the detection of methylmalonic acid (MMA). In a particular aspect, the invention relates to methods for detecting derivatized methylmalonic acid (MMA) by mass spectrometry. | 12-15-2011 |
20110318842 | SYSTEMS FOR THE LIGHT-INDUCED SEPARATION OF CHARGES - Organic systems having a light-absorbing unit and a unit causing separation of charges are described. Said organic systems efficiently separate charges induced by light and have high lightfastness. | 12-29-2011 |
20110318843 | DEVICE FOR EVALUATING A HEAT EXCHANGE FLUID - A method for assessing a corrosion inhibitor in a coolant, comprises providing a test kit comprising a first chamber containing an acid buffer and a solvent immiscible therein and a second chamber containing an indicator, the second chamber being in fluid communication with the first chamber and being configured such that retraction of the second chamber draws fluid into the first chamber and advancement forces fluid into the second chamber; drawing a coolant sample into the first chamber; contacting the coolant sample with the acid buffer and solvent in the first chamber and extracting the corrosion inhibitor into the solvent; allowing the solvent and buffer to separate in the first chamber; forcing a portion of the separated solvent into the second chamber; contacting the separated solvent with the indicator in the second chamber, and obtaining a visual indication of the presence of corrosion inhibitor in the coolant sample. | 12-29-2011 |
20120149121 | OPTICAL CELL - A use composition monitor determines the concentration of peracid and/or peroxide in a use composition using a kinetic assay procedure. A sample mixture containing a sample of the use composition, a diluent and at least one reagent is prepared and analyzed using, for example, an optical detector. A reduced-turbulence optical detector can be used to improve collected response data. A reduced-turbulence optical detector can include a cell body disposed about a length of transparent tubing. The cell body positions one or more emitter/receiver pairs about the transparent tubing. Thus, tube junctions are eliminated and sample flow within the tube is substantially turbulence free. | 06-14-2012 |
20120301970 | METHODS AND KITS FOR QUANTITATIVE DETERMINATION OF TOTAL ORGANIC ACID CONTENT IN A COOLANT - The invention relates to methods and kits for determining the total organic acid content in a coolant sample. | 11-29-2012 |
20120309097 | KIT FOR DETECTING FUNCTIONAL CARBOXYL GROUPINGS - A subject of the invention is a kit for the identification, characterization and quantification by a single detection of the carboxylic, thiol and amine functional groups contained in a sample. | 12-06-2012 |
20120329167 | MASS SPECTROMETRIC DETERMINATION OF FATTY ACIDS - The invention relates to the detection of fatty acids. In a particular aspect, the invention relates to methods for detecting very long chain fatty acids and branched chain fatty acids by mass spectrometry. | 12-27-2012 |
20130171737 | SUPERABSORBENT POLYMERS - A superabsorbent polymer network formed of two monomers and two crosslinkers. The monomers and the crosslinkers are described herein. Further, a method for preparing this superabsorbent polymer network is disclosed. Also disclosed is a method of determining a ratio between two monomeric moieties in a superabsorbent polymer network formed of two monomers. | 07-04-2013 |
20140134747 | METHODS FOR DETERMINING IF AN ANIMAL'S METABOLISM IS KETOGENIC - The invention provides methods for determining if an animal's metabolism has been shifted to ketogenic status by collecting a first urine sample from the animal when the animal's metabolism is not in a ketogenic status; collecting a second urine sample from the animal when the animal's metabolism is possibly in a ketogenic status; analyzing the first urine sample and the second urine sample for beta-hydroxy butyrate; and determining that the animal's metabolism has been shifted to ketogenic status if the concentration of beta-hydroxy butyrate in the second urine sample exceeds the concentration of beta-hydroxy butyrate in the first urine sample by ten percent (10%) or more. | 05-15-2014 |
20140141523 | OPTICAL CELL - A use composition monitor determines the concentration of peracid and/or peroxide in a use composition using a kinetic assay procedure. A sample mixture containing a sample of the use composition, a diluent and at least one reagent is prepared and analyzed using, for example, an optical detector. A reduced-turbulence optical detector can be used to improve collected response data. A reduced-turbulence optical detector can include a cell body disposed about a length of transparent tubing. The cell body positions one or more emitter/receiver pairs about the transparent tubing. Thus, tube junctions are eliminated and sample flow within the tube is substantially turbulence free. | 05-22-2014 |
20140179015 | RESPONSIVE LUMINESCENT LATHANIDE COMPLEXES - The invention provides a compound of formula (I): | 06-26-2014 |
20140315322 | METHOD FOR MEASURING ACETIC ACID CONCENTRATION IN BLOOD PLASMA - The present invention relates to providing a simple and highly reproducible method for measuring the concentration of acetic acid in blood plasma by using a gas chromatography/mass spectrometry (GC/MS), and more specifically relates to a method for measuring the concentration of acetic acid in blood plasma by using a gas chromatography/mass spectrometry (GC/MS), which comprises extracting acetic acid in blood plasma with methyl-tert-butyl ether (MTBE). | 10-23-2014 |
20140342462 | MEASUREMENT OF LACTIC ACID IN BIOLOGICAL FLUIDS - We propose a procedure for the determination of lactic acid or lactate in biological fluids, which is simple and low cost with respect to the known methodologies. This procedure can be used by unskilled personnel and it can be implemented in disposable test strips and portable measure devices. The procedure is based on the photochemical reaction of lactic acid with Fe(III), which is reduced to Fe(II) when irradiated with UV light. The Fe(II), produced proportionally to the amount of lactate in the sample, is determined electrochemically or using its reaction with a colored complexing agent, such as 1,10-phenanthroline, and determined by spectrophotometry. This method is advantageous both for the low cost of the reagents employed, and for their short and long term stability. | 11-20-2014 |
20150037901 | METHODS AND KITS FOR QUANTITATIVE DETERMINATION OF TOTAL ORGANIC ACID CONTENT IN A COOLANT - The invention relates to methods and kits for determining the total organic acid content in a coolant sample. | 02-05-2015 |
20150377858 | METHOD AND DEVICE FOR CARBONYL DETECTION AND QUANTITATION - Fluorescence chromophores such as phenylene diamine derivatives can undergo oxidative coupling and polymerization to form optical, colorimetric and fluorogenic, multimers and polymers. The presence of carbonyl containing moieties such as aldehydes and ketones under favorable environmental conditions can initiate, catalyze, accelerate and modulate this reaction which in turn provides a mechanism for the detection and quantitation of such moieties. Selected phenylene diamine derivatives can be used for the detection and quantitation of aldehyde and ketones via measurement of the reaction and the associated spectroscopic transformation. In particular, the use of meta-phenylene diamine (mPDA) and related compounds for aldehyde detection and quantitation is described. The method provides a convenient means for monitoring aldehyde and ketone levels without use of separation steps. The method is applicable to kinetic and quasi-endpoint detection assay formats. | 12-31-2015 |
20160020077 | METHOD FOR MONITORING LEVEL OF PARABEN IN COSMETICS - The invention discloses a method for monitoring level of paraben comprising: dissolving a sample in a solvent and obtaining a supernatant containing paraben by ultrasonic vibration and high speed centrifugation; performing a derivatization reaction between a derivatization reagent and paraben by adding the derivatization reagent into the supernatant to obtain a derivatization solution containing a tagged paraben; extracting the derivatization solution by an extractant to obtain an extract containing the tagged paraben; and ionizating the tagged paraben by a laser beam and analyzing mass-to-charge ratio of the tagged paraben by an analyzer to determine molecular weight thereof. | 01-21-2016 |
20160033522 | METHYLCITRATE ANALYSIS IN DRIED BLOOD SPOTS - There is provided a method of measuring methylcitrate (MCA) in a sample by derivatizing the MCA, for example with 4-[2-(N,N-dimethylamino)ethylaminosulfonyl]-7-(2-aminoethylamino)-2,1,3-benzoxadiazole (DAABD-AE); measuring a level of the derivatized MCA; and determining the level of MCA from the measured level. The sample may be a dried blood spot (DBS), and the extraction and derivatization may be carried out simultaneously. No separate extraction or purification step is required, thereby reducing sample handling. Measuring may be carried out by mass spectrometry. The method may be used to screen for subjects having or at increased risk of a propionylcarnitine (C3) related disorder. The method may be used as a first tier screen, or as a second tier test for a sample that previously triggered a positive result in a primary screen. The method may be applied to newborn screening. Related kits and uses are also provided. | 02-04-2016 |
436130000 | Formaldehyde or acetone | 11 |
20080293151 | FIBER-PACKED NEEDLE FOR ANALYZING ALDEHYDES/KETONES, ANALYTICAL APPARATUS AND ANALYTICAL METHOD - Provided are a simple method for analyzing aldehydes and ketones in a sample, which does not require a complicated operation such as extraction with a solvent and concentration of the extract; and an analytical apparatus and a fiber-packed needle which are used in the analytical method. Also provided a fiber coated with hydrochloride or sulfate of 2,4-dinitrophenylhydrazine; a needle for microextraction in which the fibers are packed; the analytical apparatus including this needle and a suction device; the method for analyzing aldehydes and ketones in a sample, characterized by comprising sucking the sample through the needle in this analytical apparatus to allow the aldehydes and ketones in the sample to react with 2,4-dinitrophenylhydrazine, thereby converting them to the corresponding 2,4-dinitrophenylhydrazones; desorbing the 2,4-dinitrophenylhydrazones; and introducing the desorbed 2,4-dinitrophenylhydrazones into a chromatograph to analyze them. | 11-27-2008 |
20090275143 | NANOSTRUCTURE ARRAY AND METHODS OF USE FOR EXPLOSIVE DETECTION - In various embodiments, the present disclosure provides a method of detecting triacetone triperoxide. In a particular implementation, the method includes providing an array of titanium nanostructures that include a sensitizing agent. The array is contacted with a fluid sample, such as vapor sample. The resistance of the array is measured. The measured resistance of the array can be used to determine whether the sample includes triacetone triperoxide. The nanostructures are, in some cases, titania nanotubes. The sensitizing agent is, in a specific example, zinc. The present disclosure also provides a triacetone triperoxide sensor that includes an array of nanostructures, at least a portion of which are sensitized with a sensitizer, such as one or more of Li | 11-05-2009 |
20100075431 | FORMALDEHYDE DETECTOR BODY, FORMALDEHYDE DETECTOR, FORMALDEHYDE DETECTION METHOD AND FORMALDEHYDE DETECTION REAGENT - A formaldehyde detector ( | 03-25-2010 |
20110151573 | Nanoporous Detectors of Monocyclic Aromatic Compounds and Other Pollutants - Porous sol-gel material essentially consisting of units of one or more first polyalkoxysilanes chosen from the following compounds: (chloromethyl)triethoxysilane; 1,3-dimethyltetramethoxydisiloxane; ethyl trimethoxysilane; triethoxy(ethyl)silane; triethoxymethylsilane; triethoxy(vinyl)silane; trimethoxymethylsilane; trimethoxy(vinyl)silane; tetraethoxysilane or tetramethoxysilane (TMOS) and of units of one or more second polyalkoxysilanes chosen from the following compounds: (N-(3-(trimethoxysilyl)propyl)ethylenediamine; 3-aminopropyltriethoxysilane (APTES) and 3-aminopropyltrimethoxysilane, in a first polyalkoxysilane/second polyalkoxysilane molar ratio of 1/0.01 to 1/1, optionally comprising a probe molecule, method of preparation and applications in the trapping of monocyclic aromatic hydrocarbons and other pollutants or in their detection. | 06-23-2011 |
20120083039 | METHOD FOR QUANTITATIVELY DETERMINING IMPURITIES - The invention relates to a method for quantitatively determining impurities in the form of aldehydes and ketones in glycerin serving for preparing pharmaceuticals, in which the glycerin containing impurities is reacted with a derivatization reagent in a sample solution and the quantity of derivatized impurities is determined. Said method is characterized in that PFBHA, O-(2,3,4,5,6-pentafluorobenzyl)-hydroxylamine hydrochloride, is used as the derivatization reagent, the derivatizing is conducted in the presence of a solubilizer in the form of a polar organic solvent, and liquid chromatographic separation and UV detection are performed. A subject matter of the invention is also the use of glycerin, in which the content of impurities of 9 ppm or less has been determined by means of the described method in a pharmaceutical preparation. According to the invention, impurities in glycerin can be better determined. | 04-05-2012 |
20120149122 | DEVICE AND METHOD FOR DETERMINING THE CONCENTRATION OF A COMPOUND IN AN AQUEOUS OR GASEOUS PHASE - A device for determining the concentration of a compound in an aqueous phase in a dynamic manner and while flowing, and a device ( | 06-14-2012 |
20130189791 | Methods for Measuring Formaldehyde Emission From One or More Samples - Methods for measuring formaldehyde emissions from a plurality of samples. An electrochemical sensor can be calibrated using a reference sample to provide a calibrated electrochemical sensor, where the time of calibration is equal to time zero. A plurality of samples can be placed within a sample chamber one at a time and a formaldehyde concentration of a gas passed across one or more surfaces of each sample can be measured. The first sample measured can be measured again as the last sample. A linear regression trend-line based on the two formaldehyde concentrations measured from the first sample can be generated. A revised linear regression trend-line based on what the formaldehyde concentration of the first sample would be at time zero and the formaldehyde concentration of the first sample when re-measured as the last sample can be generated. A correction factor for at least one of the plurality of samples measured between the two measurements of the first sample can be generated. The measured formaldehyde emission for the at least one of the plurality of samples measured between the two measurements of the first sample can be multiplied by its correction factor to provide a corrected formaldehyde concentration for the at least one of the plurality of samples. | 07-25-2013 |
20140147926 | METHOD OF ANALYZING ALDEHYDE COMPOUND IN METAL PLATING SOLUTION - This invention relates to a method of analyzing an aldehyde compound in a metal plating solution, including adding a pH control solution to an aldehyde derivative, thus preparing an oversaturated aldehyde derivative solution in which the aldehyde derivative is dissolved to be oversaturated while the pH of the aldehyde derivative solution is adjusted to be the same as that of the metal plating solution; adding the oversaturated aldehyde derivative solution to the metal plating solution, so that the aldehyde compound which is present in the metal plating solution undergoes derivation, thus obtaining an aldehyde derivative compound; extracting the aldehyde derivative compound; and analyzing the aldehyde compound from the extracted aldehyde derivative compound. | 05-29-2014 |
20150132858 | METHOD AND APPARATUS FOR ANALYZING ACETONE IN BREATH - Methods and devices are provided for analyzing acetone in breath. One such method comprises disposing a reactant in a reaction zone within the breath analysis device, wherein the reactant comprises a primary amine disposed on a surface, and wherein the reaction zone has an optical characteristic that is at a reference level. It also comprises pre-storing a liquid nitroprusside solution within the breath analysis device separately from the reactant. The method further comprises using the breath analysis device to cause the breath to contact the reactant in the reaction zone so that the acetone in the breath reacts with the reactant to form a reaction product and, after the reaction product has been formed, using the breath analysis device to cause the nitroprusside solution to contact and react with the reaction product and to facilitate a change in the optical characteristic of the reaction zone relative to the reference level. | 05-14-2015 |
20150301020 | A SENSOR COMPOSITION FOR ACETONE DETECTION IN BREATH - The present invention provides a composition for acetone detection and a process of preparation thereof. The composition comprises γ-ferric oxide (γ-Fe | 10-22-2015 |
20160061800 | MEASURING DEVICE AND MEASURING METHOD - A measuring device ( | 03-03-2016 |