Patent
Method and apparatus for determining organic carbon in sulfureous compounds
TLDR
In this paper, measured sample quantities of sulfureous matter are introduced into a sealed chamber where the samples are pyrolyzed to form sulfur dioxide and sulfur trioxide gases and to oxidize organic substances to form carbon dioxide gas.Abstract:
Measured sample quantities of sulfureous matter are introduced into a sealed chamber where the samples are pyrolyzed to form sulfur dioxide and sulfur trioxide gases and to oxidize organic substances to form carbon dioxide gas. The gases are then passed through a free sulfur-absorbing packing and into a scrubbing zone wherein transition metal amine complex is used to remove sulfureous compounds without reaction with the carbon dioxide gas. The scrubbed gases are then analyzed to determine the carbon dioxide content thereof.read more
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Vapor and particle sampling
Edward E A Bromberg,George B Jarvis,Karen E Leblanc,Gregory J. Wendel,Carlton Wong,Ain A Sonin +5 more
TL;DR: In this paper, a contact-type vapor and particle sampling apparatus for collecting vapor or particles from a moving subject is described, and a collector for use with the apparatus includes a gas impermeable material having a high binding affinity for explosives vapor exposed on a surface of a filter woven to trap explosives particles.
Patent
Methods and systems for point of care bodily fluid analysis
TL;DR: In this article, the authors proposed a system for quantitative measurement of percent glycated hemoglobin as hemoglobin A1c in whole blood having extended shelf life at room temperature, which consisted of a blood dilution solution and a device adapted for receiving at least a portion of diluted blood solution.
Patent
Selective detection of explosives vapors
David H. Fine,David P. Lieb +1 more
TL;DR: In this article, a highly selective, sensitive, fast detection system and method for detecting vapors of specific compounds in air is described, where a high speed gas chromatograph (GC) separates the vapors, after which specific vapors are decomposed in two pyrolyzers arranged in parallel and the resulting nitric oxide is detected.
Patent
Device for preventing assay interference using silver or lead to remove the interferant
TL;DR: In this article, a filter for effectively removing substances from a sample of bodily fluid which can interfere with the results of an assay is presented. But the method is limited to removing substances which interfere with determining the presence of one or more analytes in a sample.
Patent
Analytical method for the determination of nitrogen, carbon, hydrogen and sulfur or chlorine and apparatus therefor
TL;DR: An analytical method for the independent or simultaneous determination of any number of the elements, nitrogen, carbon, hydrogen and sulfur or chlorine in samples, which method comprises passing an oxygen gas through a reaction tube (28) packed with an oxidation catalyst or an oxidizing agent, said tube having a zone heated to a temperature in the range of from 800°C to 1100°C, introducing a sample into the tube to subject it to complete combustion, unifying the resulting combustion gas, dividing the gas into two portions in a definite volume ratio, introducing the one portion, together with a carrier
References
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Patent
Apparatus for analyzing ambient air
TL;DR: In this paper, the authors present an analytical approach for measuring the presence of different types of gases in AMBIENT AIR, such as METHANE, EHTYLENE, ACETYLENE and CO2.
Patent
Analysis of gaseous mixtures
TL;DR: A self-integrating CHN ANALYZER operating at super-atmospheric pressure with improved water MEASUREMENT CAPABILITIES is described in this article.
Patent
Total recovery thermal analysis system
TL;DR: In this article, a total recovery thermal analysis method and apparatus for rapidly determining quantitative yield versus boiling point temperature information up to about 1,600*F for carbon-containing materials in a micro sample which includes both volatile and nonvolatile components.
Patent
Detection of sulfur dioxide
TL;DR: A colorimetric reagent for sulphur dioxide comprises a chemically inert granular solid carrying the blue reaction product of tetramethyldiaminodiphenylmethane (TDD) and a dilute iodine, bromine, or nitric acid solution as discussed by the authors.