Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1089, Issue 1-2, Pages 65-71Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chroma.2005.06.056
Keywords
warfare agents; ethylmethylphosphonic acid; methylphosphonic acid; hydrolysis products; 2-(diisopropyl)aminoethanethiol; ion chromatography; wastewater
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An analytical method, based on the use of ion chromatography, was developed to monitor the levels of three regulated VX hydrolysis products in the effluent from a biological wastewater treatment process-ethylmethylphosphonic acid, methylphosphonic acid and 2-(diisopropyl)aminoethanethiol. Previous methods have not been applied to wastewater matrices or 2-(diisopropyl)aminoethanethiol. Despite the specificity and sensitivity constraints of this method, it was possible to measure the compounds in bioreactor effluents down to a level substantially below the US Army discharge limit of 0.1% (w/v). Analytical data was confirmed by liquid chromatography-mass spectrometry (LC-MS) at an independent laboratory. (c) 2005 Elsevier B.V. All rights reserved.
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