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Your search keyword '"Cochran, Jack"' showing total 6 results
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6 results on '"Cochran, Jack"'

1. Applying comprehensive analysis to EPA Method 1613B samples--discover those compounds usually discounted in environmental samples

Author

de Vos, Jayne, Cochran, Jack, Reiner, Eric J., and Gorst-Allman, Peter

Subjects
Chemistry
Abstract

Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are ubiquitous environmental pollutants that are persistent and toxic. The historical quantitative analysis of these compounds has been achieved with high-resolution targeted analysis [...]

Published
2013

2. Evaluation of QuEChERS, cartridge SPE cleanup, and gas chromatography time-of-flight mass spectrometry for the analysis of pesticides in dietary supplements

Author

Kowalski, Julie, Misselwitz, Michelle, Thomas, Jason, and Cochran, Jack

Subjects
Chemistry, Food, Drug and Cosmetic Act
Abstract

New requirements for dietary supplements to be manufactured under cGMP regulations have created a need for methods to detect pesticides in these complex, largely botanical products (for example, vitamins, herbal [...]

Published
2010

3. Lowering detection limits for 1,4-dioxane in drinking water using large volume injection in an unmodified splitless GC inlet

Author

Rattray, Chris, Cochran, Jack, and English, Chris

Subjects
Gas chromatography -- Usage, Drinking water -- Contamination -- Research, Dioxane -- Environmental aspects -- Analysis -- Research, Chemistry
Abstract

Concurrent solvent recondensation-large volume splitless injection (CSR-LVSI), an alternative to programmed temperature vaporization (PTV), typically requires a special GC inlet. The technique described here uses an unmodified split/ splitless inlet [...]

Published
2012

4. Semivolatiles analysis using split injection

Author

Rattray, Chris and Cochran, Jack

Subjects
Restek Corp., Chemistry, Science and technology
Abstract

Analyzing a broad range of semivolatile environmental pollutants at low levels requires a sensitive detector as well as an inert sample pathway. While semivolatiles analysis by methods such as EPA [...]

Published
2016

5. Fast organochlorine pesticides GC-Micro-ECD analysis using either helium or hydrogen carrier gas

Author

Thomas, Jason, English, Chris, Cochran, Jack, and Stidsen, Gary

Subjects
Electrons -- Capture, Hydrogen -- Usage, Organochlorine compounds -- Research, Helium -- Usage, Chemistry
Abstract

In recent years, the increasing cost and uncertain availability of helium have prompted many labs to explore the use of hydrogen as an alternate carrier gas. While switching from helium [...]

Published
2014

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