Citation:
HUANG Gui-Lan, YUAN Ling, LIU Shi-Lei, ZHOU Shi-Kun. In Situ Phosphitylation for Nuclear Magnetic Resonance Identification of Precursors of Chemical Warfare Agents[J]. Chinese Journal of Analytical Chemistry,
;2015, 43(12): 1927-1933.
doi:
10.11895/j.issn.0253-3820.150178
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There is a trouble for 1H NMR identification of non-phosphorus precursors of chemical warfare agents listed in Schedule 2, part B of Chemical Weapons Convention(CWC) in complex matrix. An alternative method was proposed for identification by in situ derivatization of the precursors containing hydroxyl functions with 2-chloro-4,4,5,5-tetramethyl-1,3,2-dioxaphospholane(CTMP) in a NMR tube followed by phosphorus-31 NMR detection. The specificity, stability, sensitivity and selectivity of the method were evaluated with pinacol and three aminoalcohols isomers, 2-(N,N-dipropylamino)ethanol, 2-(N-butyl-N-ethylamino)ethanol and 2-(N-isopropyl-N-propylamino) ethanol. The results showed that the phosphorylation products were single, stable and allowing clear distinction between aminoalcohols isomers. The method was used for the detection and identification of three mixed aminoalcohols isomers present(at original concentration of 10μg/mL) in an organic sample from 32th OPCW Official Proficiency Tests.
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