.H. Hamed, A. (2011). Simple Method for Spectrophotometric Determination of Benzidine in Aqueous Solutions by Coupling with Β-Naphthol. , 14(2), 43-50.
Ameera .H. Hamed. "Simple Method for Spectrophotometric Determination of Benzidine in Aqueous Solutions by Coupling with Β-Naphthol". , 14, 2, 2011, 43-50.
.H. Hamed, A. (2011). 'Simple Method for Spectrophotometric Determination of Benzidine in Aqueous Solutions by Coupling with Β-Naphthol', , 14(2), pp. 43-50.
.H. Hamed, A. Simple Method for Spectrophotometric Determination of Benzidine in Aqueous Solutions by Coupling with Β-Naphthol. , 2011; 14(2): 43-50.

Simple Method for Spectrophotometric Determination of Benzidine in Aqueous Solutions by Coupling with Β-Naphthol

Journal of Al-Nahrain University - Science
Article 1, Volume 14, Issue 2, 2011, Pages 43-50
Author
Ameera .H. Hamed
Abstract
Abstract
Anew simple and rapid colorimetric method has been developed for the determination of benzidine in aqueous solutions. The method is based on the formation of a pink colored azo dye by diazotization of benzidine, followed by a diazo-coupling reaction between the resulting product and β-naphthol. The maximum absorbance of azo dye at 525 nm. Beer's law was found to be obeyed in the concentration range of 0-12 µg. ml1 with molar absorptivity 12360 L. mol1. cm1. The optimum reaction conditions and other analytical parameters were evaluated.
Keywords
Determination Benzidine; Diazo Coupling Reaction; naphthol
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