Abstract: A procedure is reported for the spectrophotometric determination of fluosilicic acid in commercial hydrofluoric acid. The determination of silicon as (?)a-silicomolybdic acid is carried out directly without previous separation of hydrofluoric acid.

Title of Study: Studies in the spectrophotometric determination of silicon in materials decomposed by hydrofluoric acid: Spectrophotometric determination of fluosilicic acid in hydrofluoric acid

Authors:  P.R.Graff PR, Langmyhr FJ

Journal: Analytica Chimica Acta, Volume 21, 1959, Pages 429-431

*See online http://www.sciencedirect.com/science/article/pii/0003267059802130?via%3Dihub

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