PROCEDIMENTO EXPERIMENTAL PARA A PROSPECÇÃO GEOQUÍMICA DE FLÚOR EM SOLOS

HELMUT BORN

Resumo


An experimental method for the determination of cold-extractable fluoride in soils, for geochemical exploration purposes, is presented. Dilute perchloric acid and Na-citrate/K.-nitrate buffer solutions were used and analysis performed by means of the fluoride specific electrode. Several concentrations of acid and buffer solutions were tested on 6 artificial fluorite standards and 22 soil samples. Results indicate that the method can be helpful in the search of fluorite mineralizations in regions of thick soil cover.

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