Summary
The HPLC behaviours of Cr(VI), Mo(VI) and V(V) peroxo complexes in a H2O2-8-hydroxyquinolinebipyridine system were studied by using pre-column in combination with on-column derivatisation. The chromatograms of Cr(VI), Mo(VI) and V(V) show them to be CrO2− 4, oxine-Mo peroxo and oxine-V-bipyridine peroxo complexes, respectively, and were used for the separation, identification and determination of Cr(VI), Mo(VI) and V(V) using acetonitrile-water as mobile phase. The calibration curves obtained for 20 μl injections were linear for 1.4–7.0 mg/l Cr, 1.3–6.5 mg/l Mo and 0.7–3.4 mg/l V. The relative standard deviations were between 6 and 10%.
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Wu, Yh., Schwedt, G. HPLC analysis of Cr, V and Mo using pre- in combination with on-column derivatisation by oxine, bipyridine and H2O2 . Z. Anal. Chem. 329, 39–42 (1987). https://doi.org/10.1007/BF00487538
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DOI: https://doi.org/10.1007/BF00487538