Determination of Fe(III), Al(III), Mo(VI) and W(VI) with tetracycline by reversed-phase high-performance liquid chromatography.
Tetracycline (TC) was used as a precolumn chelating reagent for reversed-phase high-performance liquid chromatographic (HPLC) separation and determination of Fe(III), Al(III), Mo(VI) and W(VI). The metal-TC chelates were separated on a Nucleosil C(18) (5 mum) column using a mobile phase of acetonitrile-water (21:79, v/v) containing citrate buffer and sodium chloride, nanogram levels of the metals could be determined by HPLC with satisfactory precision. The proposed method was applied to the simultaneous determination of Mo(VI) and W(VI) in mineral samples.
Ding
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X
Research Centre of Physical and Chemical Analysis, Hebei University, Baoding 071002, People's Republic of China.
Fu
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C