Towards a remote IR fiber-optic sensor system for the determination of chlorinated hydrocarbons in water

被引：67

作者：

Jakusch, M ^{[1
]}

Mizaikoff, B ^{[1
]}

Kellner, R ^{[1
]}

机构：

[1] TEL AVIV UNIV,RAYMOND & BEVERLY SACKLER FAC EXACT SCI,SCH PHYS & ASTRON,IL-69978 TEL AVIV,ISRAEL

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1997年 / 38卷 / 1-3期

关键词：

Fourier transform infrared spectroscopy; fiber evanescent-wave spectroscopy; silver halide; chlorinated hydrocarbons;

D O I：

10.1016/S0925-4005(97)80175-X

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A laboratory prototype of a mid-infrared (MIR) fiber-optic sensor system capable of remote on-site and real-time determination of chlorinated hydrocarbons (CHCs) in water has been developed. The system is based upon fiber evanescent-wave spectroscopy (FEWS) and consists of silver halide fibers that are coupled to a portable Fourier transform infrared (FTIR) spectrometer. These fibers serve both as signal transfer lines and as sensing elements. In the latter case they are coated with thin films of ethylene/propylene copolymer for the purposes of enrichment of the analytes and exclusion of water. A detection limit for tetrachloroethylene of 300 ppb has been achieved with a total contact time between sample and sensor of 10 min.

引用

页码：83 / 87

页数：5

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