Development of an Hg(II) fibre-optic sensor for aqueous environmental monitoring

被引：24

作者：

Ahmad, M ^{[1
]}

Hamzah, H ^{[1
]}

Marsom, ES ^{[1
]}

机构：

[1] Univ Kebangsaan Malaysia, Fac Phys & Appl Sci, Dept Chem, Bangi 43600, Malaysia

来源：

TALANTA | 1998年 / 47卷 / 02期

关键词：

optical sensor; Hg(II); aqueous environmental monitoring;

D O I：

10.1016/S0039-9140(98)00135-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An optical sensor for Hg(II) monitoring using a complex of zinc dithizonate immobilised on XAD 7 which is based on reflectance spectrophotometry has been developed in this study. Measurements were made using a kinetic approach whereby the reflectance signal is measured at a fixed time of 5 min. The sensor could be regenerated using a saturated solution of KCI in 1 M sulphuric acid. The sensor was found to have an optimum response at pH 3.0 with respective measurement repeatability and probe-to-probe reproducibility of 1.53% and 5.26%. A linear response was observed in the Hg(II) concentration range of 0.0-180.0 ppm with a calculated limit of detection (LOD) of 0.05 ppm. The results obtained for aqueous Hg(II) determination using this probe were found to be comparable with the well-established method of atomic absorption spectrometry. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：275 / 283

页数：9

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