有機リン-パラジウム(II)錯体の薄層クロマトグラフィーによる組成決定

概要

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The compositions of dithiophosphate-palladium(II) complexes, which are formed during colorimetric determinations of dithiophosphate insecticides, Dimethoate, and Malathion, have been determined by thin layer chromatography.<BR>The colored solutions, in which the ratio of dithiophosphate concentration to total concentration of palladium ion and dithiophosphate is continuously varied, were applied to a diatomaceous earth plate, and ascendingly developed with benzene-acetone(7:3). Then, the free dithiophosphates were detected using a hydrochloric acid solution of palladium chloride as the chromogenic agent.<BR>Judging from the chlomatogram of the sample, in which no excessice dithiophosphate was detected, the compositions of these colored complexes were determined to be [dithiophosphate] to [Pd]=1:1.