DETECTION OF EXPLOSIVES WITH A COATED PIEZOELECTRIC QUARTZ CRYSTAL

被引：49

作者：

TOMITA, Y ^{[1
]}

HO, MH ^{[1
]}

GUILBAULT, GG ^{[1
]}

机构：

[1] UNIV NEW ORLEANS,DEPT CHEM,NEW ORLEANS,LA 70122

来源：

ANALYTICAL CHEMISTRY | 1979年 / 51卷 / 09期

关键词：

D O I：

10.1021/ac50045a027

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A coated piezolelectric quartz crystal, which has potential use as a simple device for assay of explosives, is used for the detection of mononitrotoluenes (MNT). The detector can indicate the presence of trinitrotoluene, the less volatile parent molecule. Carbowax 1000 was found to be useful as a coating for the sensitive and selective detection. With the coating, MNT vapor in the ppb-ppm range can be detected without serious interferences. The response time observed was only 10 s and a complete reversibility of response was obtained in less than 50 s. Some parameters that affect the efficiency of the detector (amount of coating, interferences, flow rate, temperature) were also investigated. © 1979, American Chemical Society. All rights reserved.

引用

页码：1475 / 1478

页数：4

共 29 条

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