Voltammetric determination of phosphonate ion as a heteropoly complex.
A simple voltammetric method for the determination of phosphonate ion is described. A 12-molybdodiphosphonate complex is formed in a 50mM Mo(VI)-0.5M HCl-70% (v/v) CH(3)CN system containing phosphonate ion. The yellow heteropolyanion undergoes apparent two-step reductions at a glassy carbon electrode. The voltammetric reduction currents depend linearly on the phosphonate concentration in the range 1 x 10(-5)-1 x 10(-3)M.
Himeno
S
S
Department of Chemistry, College of Liberal Arts, Kobe University, Kobe 657, Japan.
Osakai
T
T
Saito
A
A
Hori
T
T