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Flow-injection spectrofluorimetric determination of boron using Alizarin red S in aqueous solution

✍ Scribed by N. Chimpalee; D. Chimpalee; B. Boonyanitchayakul; D.Thorburn Burns

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 292 KB
Volume: 282
Category: Article
ISSN: 0003-2670
DOI: 10.1016/0003-2670(93)80129-9

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✦ Synopsis

Boron can be determined spectrofluorimetrically based on the reaction of borate ion and Alizarin Red S in aqueous media using flow-injection analysis. The carrier stream was deionized water and the reagent streams were 1% (w/v) EDTA, phosphate buffer (pH 7.5) and 2 X lo-' M Alizarin Red S solutions. The injection rate was 50 hb'. The calibration graph was linear up to 40 pg ml-' boron and the relative standard deviation for the determination of 4.0 pg ml-' of boron was 0.83% (n = 10). The detection limit was 0.34 kg ml-' based on injection volumes of 250 ~1. The system was applied to the determination of boron in electroplating solutions.

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