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Preparation and Analysis of Samples for the Third Round Robin Verification Exercise

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Final rept.

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For the third international Round Robin verification exercise executed in the fall of 1991 the TNO-Prins Maurits Laboratory prepared the samples consisting of rubber, paint and concrete. These materials, which were selected to represent samples taken during an inspection at a military facility, were spiked with mustard gas and related vesicants as well as with decomposition products of mustard gas. Diesel fuel and an aromatic white spirit were added as a chemical background. In addition to a description of the spiked materials, details about the coding and transportation of the samples are presented. A number of procedures was developed for the analysis of the samples. Rubber, which was spiked with mustard gas and its disulphide, could either be analysed by extraction with a nonpolar solvent or by thermodesorption. The latter procedure had advantages for the analysis by gas chromatography-mass spectrometry GC-MS. Paint was spiked with sesquimustard Q and dimustard ether T. Determination of these compounds was based on extraction with a nonpolar solvent, followed by spectrometric analysis GC-MS, NMR. Concrete was spiked with two polar decomposition products of mustard gas viz. thiodiglycol and its sulphone. Extraction with water followed by analysis with thermospray- liquid chromatography-mass spectrometry TSP-LC-MS turned out to be the best method for the quantitative determination. All compounds added were rather stable in the materials. After a period of 7 weeks they could still be recovered with reasonable or even good efficiencies. Mustard Gas, Samples, Rubber, Paint, Concrete.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Coatings, Colorants and Finishes
  • Elastomers and Rubber
  • Chemical, Biological and Radiological Warfare

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