Optical fibre reflectance sensors for the detection of heavy metal ions based on immobilised Br-PADAP

被引：42

作者：

Vaughan, AA ^{[1
]}

Narayanaswamy, R ^{[1
]}

机构：

[1] UMIST, Dept Instrumentat & Analyt Sci, Manchester M60 1QD, Lancs, England

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1998年 / 51卷 / 1-3期

关键词：

optical sensor; heavy metals; immobilised reagent;

D O I：

10.1016/S0925-4005(98)00224-X

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Optical fibre based reflectance sensors for the detection of heavy metal ions have been developed based on the use of the immobilised reagent Br-PADAP. Two methods of immobilisation, namely physical adsorption and membrane entrapment, have been employed and their relative merits have been discussed. Br-PADAP immobilised onto XAD-4 shows a reproducible and reversible response to heavy metal ions and a good limit of detection (31 ppb for Zn(II) with an analysis time of 6 min). Br-PADAP/PVC membranes show fairly quick and reproducible responses, but are irreversible. Br-PADAP/XAD-4 is proposed as a suitable reagent phase for use in a multi-metal ion sensor. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：368 / 376

页数：9

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