CATALYTIC DETERMINATION OF COPPER IN BLOOD-PLASMA USING FLOW-INJECTION BIAMPEROMETRY

被引：14

作者：

MICHALOWSKI, J

TROJANOWICZ, M

机构：

[1] UNIV WARSAW, DEPT CHEM, PASTEURA 1, PL-02093 WARSAW, POLAND

[2] WARSAW UNIV BRANCH, INST CHEM, BIALYSTOK, POLAND

来源：

ANALYTICA CHIMICA ACTA | 1993年 / 281卷 / 02期

关键词：

AMPEROMETRY; CATALYTIC METHODS; FLOW INJECTION; BLOOD; COPPER; PLASMA;

D O I：

10.1016/0003-2670(93)85185-M

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method for the determination of copper based on the catalytic effect of Cu(II) on the oxidation of thiosulphate by Fe(III) is described. Fe(II) formed in this reactiton in the presence of an excess of Fe(III) allows the use of amperometric detection with two polarized platinum wire electrodes. At a polarizing voltage of 80 mV a linear dependence of current intensity on Cu(II) concentration is obtained in the range of Cu(II) concentrations present in blood plasma. In determinations with a sampling rate of 70 h-1 a satisfactory agreement was obtained between the results of flow-injection analysis with biamperometric detection and flame atomic absorption spectrometry.

引用

页码：299 / 304

页数：6

共 30 条

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