Plasma chromatography of n-alkyl acetates |
| |
Authors: | FW Karasek A Maican OS Tatone |
| |
Institution: | Department of Chemistry, University of Waterloo, Waterloo, Ontario Canada |
| |
Abstract: | Plasma chromatography is a technique which permits characterization and analysis of trace constituents in a gaseous mixture at atmospheric pressure. It is especially well suited as a gas chromatographic detector. Operating at atmospheric pressure, the instrument uses either air or nitrogen carrier gas into which the sample is injected directly or through a gas chromatograph. The compounds are identified by their characteristic positive and negative mobility spectra, which consist of simple molecular and dissociative ions. Quantities as low as 10?6 to 10?12 g are detectable. For use as a gas chromatographic detector, reference mobility spectra of compounds are needed. Those of n-alkanes, alcohols, ketones, halogenated aromatics, substituted nitrobenzenes, polychlorinated biphenyls, alkyl halides, aliphatic N-nitrosamines and isomeric phthalic acids have been previously reported. This study reports the reference mobility spectra produced by n-alkyl acetates. These compounds display strong positive mobility spectra but no negative mobility spectra. The spectra all show characteristic MH+, M(H2O)nH+ and (M2)H+ along with the alkyl fragment ions. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|