Anchoring the quantification of VX and Russian VX using portable gas chromatography-mass spectrometry and focusing agents
نویسندگان
چکیده
Field portable gas chromatography-mass spectrometry, GC-MS, have been established as the ‘gold standard’ of chemical identification and quantification for threats however several warfare agents shown to evade required detection limits. This work demonstrates derivatization O-ethyl S-(2-diisopropylaminoethyl) methylphosphonothioate (VX) N,N-diethyl-2-[methyl(2-methylpropoxy)phosphoryl]sulfanylethanamine (Russian VX, RVX) into VX-G (O-ethyl methylphosphonofluoridate) RVX-G (O-isobutyl through V-to-G conversion. The G-analogues VX RVX are collected on Tenax® TA thermal desorption tubes then analyzed by GC-MS. Each tube is loaded with a target-based standard called focusing agent. Here, we provide relative response factors agent diethyl malonate well ethylthiophosphonate that derivatized G-analogue. Our results more reliable reproducible method (10.4% RSD) (10.9% than bromopentafluorobenzene internal (32.9% RSD).
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Gas Chromatography-Mass Spectrometry
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ژورنال
عنوان ژورنال: International Journal of Mass Spectrometry
سال: 2021
ISSN: ['1387-3806', '1873-2798']
DOI: https://doi.org/10.1016/j.ijms.2021.116659