Determination of chemical warfare agents, their hydrolysis products and related compounds in soil

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Authors
  1. D’Agostino, P.A.
  2. Provost, L.R.
Corporate Authors
Defence R&D Canada - Suffield, Ralston ALTA (CAN)
Abstract
A procedure based on sequential hexane and dichloromethane extraction followed by trimethylsilyl derivatization and capillary column gas chromatographic-mass spectrometric (GC-MS) confirmation was developed for the verification of chemical warfare agents, their hydrolysis products and related compounds in soil. The chemical warfare agents sarin, soman and mustard and the simulant triethyl phosphate were added to four different soil types at the 50 and 5µ/g levels and recovered with efficiencies varying from nearly 100% to about 5%. The recovery efficiencies were in the range 50-90% for most soil types contaminated with soman, mustard and triethyl phosphate. Sarin recovery was generally the lowest (5-30%). Hydrolysis products, due to degradation of the spiked chemical warfare agents during the course of the experiments, were detected and confirmed as trimethylsilyl derivatives. The developed sample handling and analysis procedure was applied to soil samples in support of range clearance operations. The chemical warfare agent tabun and sixteen related components and their hydrolysis products were identified during capillary column GC-MS analysis of soil extracts.
Keywords
Sarin;Soman;Decomposition products
Report Number
DRES-OL-4-91 — Scientific Literature
Date of publication
01 May 1991
Number of Pages
8
DSTKIM No
CA032827
CANDIS No
532091
Format(s):
Document Image stored on Optical Disk

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