Spectrophotometric study of coproporphyrin-I complexes of copper(II) and cobalt(II)

被引：22

作者：

Giovannetti, R ^{[1
]}

Bartocci, V ^{[1
]}

Ferraro, S ^{[1
]}

Gusteri, M ^{[1
]}

Passamonti, P ^{[1
]}

机构：

[1] UNIV CAMERINO,DIPARTIMENTO SCI CHIM,I-62032 CAMERINO,ITALY

来源：

TALANTA | 1995年 / 42卷 / 12期

关键词：

copper(II); cobalt(II); spectrophotometry; coproporphyrin-I;

D O I：

10.1016/0039-9140(95)01662-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The reagent 3,8,13,18-tetramethyl-21H,23H-porphine-2,7,12,17-tetrapropionic acid or coproporphyrin-I (CPI) was used for the spectrophotometric determination of copper(II) and cobalt(II) in the presence of pyridine and imidazole catalysts. Optimum conditions were investigated and the methods were applied to the determination of parts per billion levels of copper(II) and cobalt(II). The Sandell sensitivities of the recommended procedures were 0.568 mu m cm(-2) and 0.464 mu g cm(-2) (for A = 0.001) for copper and cobalt, respectively, The relative standard deviations Evert 2.0% for copper and 1.0% for cobalt. The kinetics of the reaction of CPI with copper(II) and cobalt(II) in the presence of the catalysts and the influence of the temperature were studied, and their kinetic constants determined. The influence of light on the photodecomposition of CPI was also studied.

引用

页码：1913 / 1918

页数：6

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[1]

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[2]

CORVIN HA, 1962, J AM CHEM SOC, V27, P3060

[3]

FRIES J, 1975, ORGANISCHE REAGENZIE

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