Abstract

A method has been proposed to predict the positions of the elution peaks of some lower oxo acids of phosphorus and orthophosphoric acid in gradient elution chromatography through an anion exchange resin. If the relation between lograrithms of the distribution ratios and of the concentration of ammonium acetate as eluent is linear, one can calculate the position of the elution peak by the method presented here. The calculated positions of the elution peaks of▪ acid agreed approximately with the observed ones. The order of the sorbabilities of phosphate ions is dependent upon the concentrations of ammonium acetate as eluent.

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