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- W2003210010 abstract "The development of a method for the analysis of organoarsenic compounds that combines dithiol derivatization with solid-phase microextraction (SPME) sample preparation and gas chromatography–mass spectrometry (GC–MS) is described. Optimization focused on a SPME–GC–MS procedure for determination of 2-chlorovinylarsonous acid (CVAA), the primary decomposition product of the chemical warfare agent known as Lewisite. Two other organoarsenic compounds of environmental interest, dimethylarsinic acid and phenylarsonic acid, were also studied. A series of dithiol compounds was examined for derivatization of the arsenicals, and the best results were obtained either with 1,3-propanedithiol or 1,2-ethanedithiol. The derivatization procedure, fiber type, and extraction time were optimized. For CVAA, calibration curves were linear over three orders of magnitude and limits-of-detection were <6·10−9 M in solution, the latter a more than 400× improvement compared to conventional solvent extraction GC–MS methods. A precision of <10% R.S.D. was typical for the SPME–GC–MS procedure. The method was applied to a series of water samples and soil/sediment extracts, as well as to aged soil samples that had been contaminated with Lewisite." @default.
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- W2003210010 date "1998-05-01" @default.
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- W2003210010 title "Determination of organoarsenicals in the environment by solid-phase microextraction–gas chromatography–mass spectrometry" @default.
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- W2003210010 doi "https://doi.org/10.1016/s0021-9673(98)00080-6" @default.
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