Bagur G, Sánchez M, Gázquez D. Determination of vanadium in clam tissue (Citterea sp.) by normal-phase high-performance liquid chromatography with N-phenylbenzohydroxamic acid.
Analyst 1994;
119:1157-9. [PMID:
8074316 DOI:
10.1039/an9941901157]
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Abstract
A normal-phase high-performance liquid chromatography (HPLC) method for the selective determination of vanadium with N-phenylbenzohydroxamic acid (PBHA) is described. The Vv-PBHA complex was preconcentrated by solvent extraction into trichloromethane and injected on to a silica gel column for HPLC, with a mobile phase of methanol-trichloromethane (3 + 97) containing 9.4 x 10(-4) mol dm-3 PBHA. The detection limit for vanadium by the proposed method was 8.3 and 1.7 micrograms dm-3 for phase-volume ratios of 5:1 and 20:1 (aqueous-to-organic), respectively. Vanadium has been determined in clam tissue with satisfactory precision.
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