Gas chromatography negative ion chemical ionization mass spectrometry: Application to the detection of alkyl nitrates and halocarbons in the atmosphere

DR Worton, GP Mills, DE Oram, WT Sturges

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Abstract

Alkyl nitrates and very short-lived halocarbon species are important atmospheric trace gas species that are present in the low to sub parts per trillion concentration range. This presents an analytical challenge for their detection and quantification that requires instrumentation with high sensitivity and selectivity. In this paper, we present a new in situ gas chromatograph negative ion chemical ionization mass spectrometer (GC/NICI-MS) coupled to a non-cryogen sample pre-concentration system. This instrument, with detection limits of
Original languageEnglish
Pages (from-to)112-119
Number of pages8
JournalJournal of Chromatography A
Volume1201
Issue number1
DOIs
Publication statusPublished - 1 Aug 2008

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