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Issue 1239, 1979
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Rapid method for determining fluoride in vegetation using an ion-selective electrode

Abstract

Fluoride was extracted from dried vegetation by stirring with 0.1 N perchloric acid for 20 min at 20 °C. The fluoride content was determined in this extract (pH 1) using the method of standard additions, thus eliminating the need to de-complex fluoride prior to analysis. The presence of up to 2.0% of silicon, 0.06% of iron, 0.1% of aluminium, 0.7% of magnesium and 1.2% of calcium did not result in any interferences and recoveries of 98–102% were obtained. The fluoride contents of standard samples determined by this method were highly correlated (r= 0.999) with those obtained by reference methods over the range 4–2000 µg g–1 of fluoride in the dry matter.

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Article type: Paper
DOI: 10.1039/AN9790400545
Citation: Analyst, 1979,104, 545-551
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    Rapid method for determining fluoride in vegetation using an ion-selective electrode

    A. E. Villa, Analyst, 1979, 104, 545
    DOI: 10.1039/AN9790400545

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