Microdetermination of Molybdenum in Iron and Biological Samples by Adsorption Voltammetry

Abstract

Molybdenum has been determined by adsorption′voltammetry in a pH 2.40 buffer solution (0.005M N_aH₂PO₄-0.01M H₃PO₄). Utilizing the Strong adsorption of 12-molybdenum phosphate at a hanging mercury electrode, nanomole sensitivities are achieved. The derivative peak current is directly proportional to the concentration of molybdenum (VI) over the range of 5×10–9?2×10^?7M. The detection limit is 4×10^?9M.