Atmospheric pressure helium microwave detection system for gas chromatography

Abstract

The authors thank the Environmental Protection Agency for partial support of this work through the Interagency Energy/Environment Program (EPA-IGA-D5-E684). The specification of commercial products does not imply endorsement by the National Bureau of Standards.

Element selective characterization of stability and reactivity of selenium species in selenized yeast

“…When coupled with atomic emission detection (AED), selenium in target molecules is directly monitored by spectroscopic detection of atomic emission radiation at a wavelength characteristic of the element, providing both qualitative elemental speciation and quantitation. 34, 35 We have used GC-AED to detect and determine many volatile organoselenium compounds present in or produced by plants such as garlic, elephant garlic, onion and broccoli. 21 A common structure is R-S x (Se y )-R', where R and R' are methyl or allyl groups.…”

Determination of methylcyclopentadienylmanganese tricarbonyl (MMT) in gasoline and environmental samples by gas chromatography with helium microwave plasma atomic emission detection

“…The optimal operation parameters of the plasma emission detector for manganese have been studied on system fabricated in our laboratories [3][4][5] and on a commercial GC-AED system. 5 Since these are operational parameters, some variations may exist from instrument to instrument.…”

“…Available analytical techniques for the determination of MMT are mainly gas chromatography with various detectors such as direct-current argon plasma emission, 2 helium microwave plasma emission, [3][4][5] hydrogen atmosphere flame ionization, 6 atomic absorption, 7 flame photometry, 8 electron capture 9 and alternating-current plasma emission. 10 All techniques can generally reach detection limits at the subnanogram to picogram level.…”

Determination of Monochloroacetic Acid and Dichloroacetic Acid for Quality Control of Acetic Acid Chlorination Industry by Ion Chromatography

“…Most performed the analysis of MCA and DCA by (a) gas chromatography with a microwave plasma emission detector as the selective determination of chlorine (5)(6)(7)(8), (b) gas chromatography equipped with an electron capture detector (9,10), and (c) gas chromatography using electrospray ionization-tandem mass spectrometry as detector after converting them to their benzyl esters (11,12). To our knowledge, no high performance liquid chromatography methods have been reported.…”