Catalyzed decomposition of nerve gases and potentiometric detection of the byproducts

被引：6

作者：

Xie, YW ^{[1
]}

Popov, BN ^{[1
]}

机构：

[1] Univ S Carolina, Dept Chem Engn, Columbia, SC 29208 USA

来源：

ANALYTICA CHIMICA ACTA | 2001年 / 448卷 / 1-2期

关键词：

nerve; gas; decomposition; potentiometric; detection;

D O I：

10.1016/S0003-2670(01)01313-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Several systems are presented for detection of nerve gases, Sarin and Soman, based on catalyzed decomposition of nerve gases by copper ion-ligand chelates and potentiometric detection of the byproduct, fluoride ion. Diisopropyl fluorophosphate (DFP) was used as the nerve gas mimic. It was found that 1:1 Cu(II)-DMBP (4,4'-dimethyl-2,2'-bipyridyl) and 1:2 Cu(II)-TMEDA (N,N,N',N'-tetramethylethylenediamine) chelates were the most effective catalysts for accelerating the decomposition of DFP. With a response time of about 5 min and a potential drop of 30-50 mV, the detection limit for DFP is 2 x 10(-6) M. This method is sensitive, selective, and reproducible. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：221 / 230

页数：10

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