Accession Number : ADA502969


Title :   Analysis of Trace VX in Acidified VX Hydrolysate Samples


Descriptive Note : Final rept. Nov 2007-Nov 2008


Corporate Author : EDGEWOOD CHEMICAL BIOLOGICAL CENTER ABERDEEN PROVING GROUND MD


Personal Author(s) : Rohrbaugh, Dennis K ; Yang, Yu-Chu


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a502969.pdf


Report Date : Jul 2009


Pagination or Media Count : 36


Abstract : The objective of this study was to modify and optimize US Army Element, Assembled Chemical Weapons Alternatives (USAE ACWA) method BGCAPP-204 (VX in Caustic Hydrolysate by Cool on-Column GC/MS) for analysis of ethyl S-2-diisopropylaminoethyl methylphosphonothiolate (VX) in acidified VX hydrolysate matrices. The modified procedures included the injection of VX spikes directly to the acidified hydrolysate samples and the use of an alkaline buffer (pH approximately 12) to adjust the samples to a pH close to 11 prior to VX extraction. The applicability of the modified method was tested and successfully demonstrated for VX hydrolysate alone and in the presence of energetics hydrolysate over a sample pH range of 5 to 9. VX extraction recoveries were -80%. No VX reformation was observed over the pH range studied.


Descriptors :   *MASS SPECTROMETRY , *HYDROLYSIS , *VX AGENT , *GAS CHROMATOGRAPHY , SPIKES , ALKALINITY , ENERGETIC PROPERTIES , CHEMICAL ORDNANCE , RECOVERY , INJECTION , PH FACTOR


Subject Categories : Inorganic Chemistry
      Chemical, Biological and Radiological Warfare


Distribution Statement : APPROVED FOR PUBLIC RELEASE