Salinas F, Nevado J J, Valiente P
Department of Analytical Chemistry, Faculty of Sciences University of Extremadura, 06071 Badajoz, Spain.
Talanta. 1987 Mar;34(3):321-4. doi: 10.1016/0039-9140(87)80039-5.
A kinetic method is described for determining trace amounts of manganese(II), based on its catalytic effect on the oxidation of salicylaldehyde guanylhydrazone by hydrogen peroxide. The reaction is followed spectrophotometrically by measuring the rate of change of absorbance at 505 nm. The calibration graph is linear in the range 8-80 mug/l. with a relative error of +/- 1%. The method has been applied to the determination of manganese in various samples.
