Abstract
A reverse-phase chromatographic method is described for the simultaneous determination of Co(II) and Co(III) using gradient elution of the Co(DEDTC)3 and Co(acac)3 complexes, respectively, with phosphate buffered acetonitrile water mixtures. The separated Co species are detected spectrophotometrically at 322 nm. The analytical range of the method is 0.1 to 1.25 μg/ml for Co(II) and 0.1 to 1.5 μg/ml for Co(III).
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Received: 14 March 1995/Revised: 2 May 1995/Accepted: 5 May 1995
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ID="*" Present address: Anglovaal Research Laboratories, Main Reef Rd., Johannesburg, Republic of South Africa
Acknowledgements. This paper is published by permission of MINTEK (Specialists in Mineral and Metallurgical Technology, Randburg, South Africa) who sponsored this work.
Correspondence to: P.P. Coetzee
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de Beer, H., Coetzee, P. Reverse-phase chromatographic separation of Co(II) and Co(III) as the Co(DEDTC)3 and Co(acac)3 complexes. Fresenius J Anal Chem 354, 208–211 (1996). https://doi.org/10.1007/PL00012726
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DOI: https://doi.org/10.1007/PL00012726