Trace Detection of 2, 4, 6-Trinitrotoluene Using Electrochemical Gas Sensors

被引：1

作者：

Sekhar, P. K. ^{[1
]}

Zhou, Jie ^{[1
]}

Hamblin, E. R. ^{[1
]}

Brosha, E. L. ^{[2
]}

机构：

[1] Washington State Univ Vancouver, Sch Engn & Comp Sci, Nanomat & Sensor Lab, Vancouver, WA 98686 USA

[2] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87685 USA

来源：

CHEMICAL AND BIOLOGICAL SENSORS 11 -AND- MEMS-NEMS 11 | 2014年 / 64卷 / 01期

关键词：

SOLID-ELECTROLYTE; TNT; SPECTROMETRY;

D O I：

10.1149/06401.0085ecst

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this article, selective and sensitive detection of trace amounts of 2, 4, 6-trinitrotoluene (TNT) is demonstrated. The screening system is based on a sampling/concentrator front end and electrochemical potentiometric gas sensors as the detector. Preferential hydrocarbon and nitrogen oxide(s) mixed potential sensors with integrated heaters were used to capture the signature of the explosive. Quantitative measurements based on hydrocarbon and nitrogen oxide sensor responses indicated that the detector sensitivity scaled proportionally with the mass of the explosives (down to 250 ng). The sensitivity was found to increase with increasing flow rate.

引用

页码：85 / 93

页数：9

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