Electrochemical Detection of 2,4,6-Trinitrotoluene Using Interdigitated Array Electrodes

被引：13

作者：

Trammell, Scott A. ^{[1
]}

Velez, Freddie ^{[1
]}

Charles, Paul T. ^{[1
]}

Kusterbeck, Anne ^{[1
]}

机构：

[1] USN, Res Lab, Ctr Biomol Sci & Engn, Washington, DC 20375 USA

来源：

ANALYTICAL LETTERS | 2008年 / 41卷 / 14期

关键词：

Amplification; electrochemical detection; IDA electrodes; redox cycling; TNT;

D O I：

10.1080/00032710802363404

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We describe the use of interdigitated array gold electrodes (IDAs) for the electrochemical detection of 2,4,6-trinitrotoluene (TNT). Our protocol generates a reversible redox couple (hydroxylamine/nitroso) from the initial reduction of TNT, which can be amplified using redox cycling at IDA electrodes. The IDA electrodes give a limit of detection for TNT at 6ng/mL with a linear response (r2=0.998) between 10 and 10,000ng/mL for static conditions and between 5 and 200ng/mL for flow conditions (r2=0.999).

引用

页码：2634 / 2645

页数：12

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