Preconcentration and separation of total mercury in environmental samples using chemically modified chloromethylated polystyrene-PAN (ion-exchanger) and its determination by cold vapour atomic absorption spectrometry

被引：120

作者：

Hafez, MAH ^{[1
]}

Kenawy, IMM ^{[1
]}

Akl, MA ^{[1
]}

Lashein, RR ^{[1
]}

机构：

[1] Mansoura Univ, Fac Sci, Dept Chem, Mansoura 35516, Egypt

来源：

TALANTA | 2001年 / 53卷 / 04期

关键词：

mercury determination; CVAAS; water analysis;

D O I：

10.1016/S0039-9140(00)00524-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学]; 081704 [应用化学];

摘要：

The use of chemically modified chloromethylated polystyrene-PAN, CMPS-PAN lion-exchanger) for the preconcentration and separation of total mercury after digestion in preparation for determination by cold vapour atomic absorption spectrometry (CVAAS) was described. The effects on the percentage of recovered mercury by mass change of ion-exchanger, stirring time, pH of the solution samples and eluent concentration were studied. The distribution coefficient K-d is 106.6 ml g(-1). The interfering effects of some foreign ions were described. The metal complex formed between CMPS-PAN ion-exchanger and mercury was characterized by IR spectroscopy, pH-metric titration and thermal analysis. The method is simple and rapidly applicable for the determination of total mercury (ng ml(-1)) in natural water, milk and urine. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：749 / 760

页数：12

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