Colorimetric determination of phosphorus in silicates following fusion with lithium metaborate

Abstract

The determination of phosphorus in silicate materials by use of a colorimetric technique following fusion with lithium metaborate is described. The method is rapid and the results obtained compare favourably with the accepted values for standard rock and mineral samples and also with gravimetric results. Reliable values of up to 1·75 per cent. for the phosphorus(V) oxide content have been obtained by this method.