Determination of trace amounts of fluorine, boron and chlorine from a single sodium carbonate fusion of small geological sample masses

Abstract

Trace amounts of fluorine, chlorine and boron (all below 100 ppm) in a single sodium carbonate fusion of 150 mg of geological material were determined potentiometrically (F) and spectrophotometrically (Cl and B). The accuracy and precision of this method were tested on six international reference samples.