Abstract

Organic materials are decomposed by the oxygen-flask or the hot-flask technique; the limitations of these methods for fluorine compounds and conditions allowing their reliable use for milligram and microgram samples of compounds containing up to about 60% of fluorine are described. The fluoride formed is determined spectrophotometrically by the lanthanum-alizarin flourine blue (3-aminomethylalizarin- N'N-diacetic acid) method; procedures for overcoming the interference of phosphorus and arsenic are described.

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