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Determination of trace amounts of copper with 4-(2-pyridylazo)resorcinol by solid phase spectrophotometry

Authors :
Antonio Molina-Díaz
M. I. Pascual-Reguera
Luis Fermín Capitán-Vallvey
M.L. Fernández-de Córdova
Source :
Fresenius' Journal of Analytical Chemistry. 349:722-727
Publication Year :
1994
Publisher :
Springer Science and Business Media LLC, 1994.

Abstract

A determination method for traces of copper by Solid-Phase Spectrophotometry (SPS) has been developed. It is based on the fixation of copper(II) as 4-(2-pyridylazo)resorcinol complex on a styrene-divinylbenzene anion-exchange resin. The resin phase absorbances at 525 and 800 nm are measured directly, and the determination of copper (with a RSD of 1.8%) is possible in the range of 0.3–4.5 μg L−1. The method has been applied to the determination of copper in different samples, i.e. mushrooms, tea, drugs and waters.

Details

ISSN :
16182650 and 09370633
Volume :
349
Database :
OpenAIRE
Journal :
Fresenius' Journal of Analytical Chemistry
Accession number :
edsair.doi...........66285b9f7fbc96973fa656bb0aaa0bb8
Full Text :
https://doi.org/10.1007/bf00325646