Spectrophotometric determination of tetrafluoroborate with ferroin
V S Archer1, F G Doolittle, L M Young
1Department of Chemistry, University of Wyoming, Laramie, Wyoming 82070, U.S.A.
Talanta
|August 1, 1968
Abstract:
A spectrophotometric method for determination of the tetrafluoroborate anion with ferroin is described. The ferroin tetrafluoroborate is selectively extracted in the presence of excess of ferroin into n-butyronitrile, and the absorbance of the organic extract is measured at 520 mmicro. Beer's law is followed over a wide range of tetrafluoroborate concentrations when a single extraction procedure is used. Exhaustive extractions indicate that 74 % of the tetrafluoroborate is removed in a single extraction.
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