The end-point for the titrimetric determination of fluoride with thorium nitrate has been improved by the use of methylthymol blue indicator. Up to 10 mg of fluoride can be determined in a solution buffered with glycine-perchlorate at pH 3·35.
W. Selig, Analyst, 1968, 93, 118 DOI: 10.1039/AN9689300118
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