Hook Gary L, Kimm Gregory, Koch David, Savage Paul B, Ding Bangwei, Smith Philip A
Uniformed Services University of the Health Sciences, Department of Preventive Medicine and Biometrics, Bethesda, MD 20814-4799, USA.
J Chromatogr A. 2003 Apr 11;992(1-2):1-9. doi: 10.1016/s0021-9673(03)00278-4.
A solid-phase microextraction (SPME) and gas chromatography-mass spectrometry (GC-MS) sampling and analysis method was developed for bis(diisopropylaminoethyl)disulfide (a degradation product of the nerve agent VX) in soil. A 30-min sampling time with a polydimethylsiloxane-coated fiber and high temperature alkaline hydrolysis allowed detection with 1.0 microg of VX spiked per g of agricultural soil. The method was successfully used in the field with portable GC-MS instrumentation. This method is relatively rapid (less than 1 h), avoids the use of complex preparation steps, and enhances analyst safety through limited use of solvents and decontamination of the soil before sampling.
开发了一种用于土壤中双（二异丙基氨基乙基）二硫化物（神经毒剂VX的降解产物）的固相微萃取（SPME）和气相色谱-质谱（GC-MS）采样与分析方法。使用聚二甲基硅氧烷涂层纤维并进行高温碱性水解，采样时间为30分钟，可检测每克农业土壤中添加1.0微克的VX。该方法已成功应用于配备便携式GC-MS仪器的现场。此方法相对快速（不到1小时），避免了复杂的制备步骤，并且通过有限使用溶剂和在采样前对土壤进行去污来提高分析人员安全性。
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