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COMPARISON OF METHODS FOR THE DETERMINATION OF FLUORIDE

RINALDO FERREIRA, HONÓRIO DOMINGOS BENEDET

Abstract

The electrometric, spectrophotometric and alizarin methods utilized in Santa Catarina State, Brazil, to determine the concentration of fluoride in water were compared. Significant differences among the three methods were detected. Nevertheless, statistic analysis showed that the three methods could be undistinguishedly utilized in the concentration of approximately 0.60 ppm.

Keywords

FLÚOR EM ÁGUA; MÉTODO ELETROMÉTRICO; MÉTODO ESPECTROFOTOMÉTRICO; MÉTODO COLORIMÉTRICO DE ALIZARINA. FLUORIDE IN WATER; ELECTROMETRIC METHOD; SPECTROPHOTOMETRIC METHOD; ALIZARIN METHOD.