Novel preconcentration technique for trace metal ions by aggregate film formation. Spectrophotometric determination of copper(II)

被引：25

作者：

Endo, M ^{[1
]}

Suzuki, K ^{[1
]}

Abe, S ^{[1
]}

机构：

[1] Yamagata Univ, Dept Mat Sci & Engn, Yonezawa, Yamagata 992, Japan

来源：

ANALYTICA CHIMICA ACTA | 1998年 / 364卷 / 1-3期

关键词：

preconcentration into the aggregate film; UV-visible; spectrophotometry copper(II); copper(II)-N; N-diethyldithiocarbamate; cetyltrimethylammonium chloride; sulfosalicylic acid;

D O I：

10.1016/S0003-2670(98)00130-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A highly sensitive method for the determination of copper(II) based on preconcentration of copper(II)-N,N-diethyldithiocarbamate as a aggregate film is described. Traces of copper(II) were quantitatively collected into a thin film consisting of hexadecyltrimethylammomium chloride (cetyltrimethylammomium chloride) and sulfosalicyclic acid. The film is easily detached from a membrane filter support and the copper(II) complex was determined spectrophotometrically by dissolving in N,N-dimethylformamide. The calibration graph linear from 1.6 x 10(-9) to 8 x 10(-8) mol copper(II) in 14 ml of test solution. The relative standard deviation was 3.1% (n=5) at 3 x 10(-6)M copper(II). The membrane filter could be used repeatedly. The method was applied to the determination of trace copper(II) added to river water. (C) 1998 Elsevier Science B.V.

引用

页码：13 / 17

页数：5

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