Smart-sensor approach for a fibre-optic-based residual chlorine monitor

被引：33

作者：

Belz, M ^{[1
]}

Boyle, WJO ^{[1
]}

Klein, KF ^{[1
]}

Grattan, KTV ^{[1
]}

机构：

[1] FACHHOCHSCH GIESSEN FRIEDBERG,E2,D-61169 FRIEDBERG,GERMANY

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1997年 / 39卷 / 1-3期

基金：

英国工程与自然科学研究理事会;

关键词：

optical fibres; chlorine; monolithic spectrometers; ultraviolet spectroscopy;

D O I：

10.1016/S0925-4005(97)80238-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Developments of an optical-fibre-based sensor system for monitoring residual chlorine in water are discussed. The system, based on differential absorption spectroscopy, utilizes a novel miniature monolithic diode array spectrometer operating in the ultraviolet and visible (UV-Vis) region of the spectrum in combination with an optical flow-through cell of length 430 mm and a computer-controlled deuterium lamp source. The sensor, having a detection limit of 0.2 mg l(-1) of free chlorine in water, relies on the fact that the OCl- ion, in which form dissolved chlorine exists at high pH (> 9), strongly absorbs light at 290 nm. This paper describes the systematic approach that is used in the modelling and design of this sensor system. It also outlines the construction of the device and gives an evaluation of the performance in the laboratory environment.

引用

页码：380 / 385

页数：6

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