Summary
A method has been developed for the simultaneous formation and solvent extraction of cobalt (II), copper (II), iron (II) and vanadium (IV) complexes of bis (acetylpivalylmethane)ethylenediamine (H2APM2en) in methyl isobutyl ketone. The complexes are eluted from a reversed phase HPLC column with a mixture of methanol:water:acetonitrile and detection was at 260 nm. The method has been applied to the simultaneous determination of cobalt, copper, iron and vanadium in crude petroleum oils at the ng level.
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Lanjwani, S.N., Mahar, K.P. & Channer, A.H. Simultaneous determination of cobalt, copper, iron and vanadium in crude petroleum oils by HPLC. Chromatographia 43, 431–432 (1996). https://doi.org/10.1007/BF02271024
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DOI: https://doi.org/10.1007/BF02271024