University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Classification: Industrial -> plating solution

Citations 1

"Flow Injection Spectrofluorimetric Determination Of Boron Using Alizarin Red S In Aqueous Solution"
Anal. Chim. Acta 1993 Volume 282, Issue 2 Pages 643-646
N. Chimpalee, D. Chimpalee and B. Boonyanitchayakul, D. Thorburn Burns

Abstract: Sample solution was injected into a stream of water, which was then merged with a stream of aqueous 1% EDTA before passing through a mixng coil (2 m x 0.8 mm i.d). The stream was merged with a KH2PO4/Na2HPO4 buffer stream of pH 7.5, passed through a mixing coil (2 m x 0.8 mm i.d), and the resulting stream was merged with a stream of 2 mM Alizarin Red S (C. I. Mordant Red 3) before passing through a final mixing coil (no dimensions given) and flowing to the spectrofluorimeter flow cell for fluorescence measurement at 575 nm (excitation 465 nm). All flow rates were 1.4 ml/min. Using this method, samples were analyzed at a rate of 50/h. The calibration graph was linear up to 40 µg/ml of B, with a RSD (n = 10) of 0.8% for the determination of 4 µg/ml of B and a detection limit of 0.34 µg/ml. Up to 50% Mg(II), Ca(II), Co(II), Cu(II), Fe(III), nitrate, sulfate, phosphate and tartaric acid and 1% Ba(II) and fluoride caused a 2% decrease in analyte peak height. The method was applied to the determination of B in plating solution
Boron Fluorescence Interferences