Determination of trace germanium by spectrophotometry after preconcentration on an organic solvent-soluble membrane

被引：8

作者：

Chen, Y ^{[1
]}

Zhu, RH ^{[1
]}

Qiang, H ^{[1
]}

Ji, F ^{[1
]}

Gu, XX ^{[1
]}

机构：

[1] Capital Normal Univ, Dept Chem, Beijing 100037, Peoples R China

来源：

MICROCHEMICAL JOURNAL | 2000年 / 64卷 / 01期

关键词：

germanium; preconcentration; organic solvent-soluble membrane;

D O I：

10.1016/S0026-265X(99)00020-X

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A sensitive and selective method for the determination of germanium in herb and water samples after preconcentration on an organic solvent-soluble membrane was developed. After conversion to the ternary complex with o-nitrophenylfiuorone (o-NPF) and sodium dodecyl sulfate (SDS), germanium could be collected selectively on a membrane. The membrane was then dissolved in a small volume of 2-methoxyethanol for directly measuring the absorbance. By preconcentration, the limit of detection for germanium was found to be 0.4 mu g l(-1) (0.4 ppb). The method was successfully applied for the analysis of Chinese herb, natural water, drinking water as well as urine samples. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：93 / 97

页数：5

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