Simultaneous determination of cobalt and nickel by first-derivative spectrophotometry
- 1 January 1988
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 113 (9) , 1439-1442
- https://doi.org/10.1039/an9881301439
Abstract
A method for the simultaneous determination of cobalt and nickel in mixtures by first-derivative spectrophotometry is described. The method is based on the red complexes formed by both metal ions with 1-hydroxy-2-carboxyanthraquinone in alkaline ethanol-water mixtures. The range of application is between 0.75 and 4.5 µg ml–1 for cobalt and between 0.50 and 3.0 µg ml–1 for nickel. A statistical evaluation of the experimental results is reported.Keywords
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