Determination of trace amounts of organofluorines in water by photochemical decomposition and ion-selective electrode measurement

Abstract

A simple and convenient photochemical decomposition procedure was developed for the determination of organoflourine in aqueous solutions. After irradiation, the released fluoride ion is measured with an ion-selective electrode. Any free fluorides present in the solution were determined before irradiation. The method described is suitable for determining ppb levels of fluoride ion in aqueous solutions of organofluorines. A total fluoride determination can be completed within 30–40 min. The relative standard deviation is 0.23%(for five measurements).