Synthesis and spectrophotometric studies of 4-(2-benzothiazolyl azo)-2-amino-3-hydroxypyridine as an analytical reagent.

Karnad, Shanthalakshmi and Belagali, S. L. (2008) Synthesis and spectrophotometric studies of 4-(2-benzothiazolyl azo)-2-amino-3-hydroxypyridine as an analytical reagent. Research Journal of Chemistry and Environment, 12 (3). pp. 59-62. ISSN 2278-4527

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Abstract

Abstract 4-(2-benzothiazolylazo) -2-amino -3-hydroxypyridine (BTAAHP) was synthesized and its potential as complexing agent for determination of metals has been studied spectrophotometrically. The reagent is quite sensitive for determination of Copper and it reacts instantly with Copper (II) to form reddish purple complex (lambda(max) 540 nm) at pH 2.8. Under this condition, the selectivity of the reagent is excellent and most metal ions do not interfere except for Nickel and Cobalt. Molar absorptivity of the Copper complex is 9.8 x 10(5) L mol(-1) cm(-1) in aqueous acetone at pH 2.8 (lambda(max) 540 nm), the system confirms Beer's law for 1.25 mg L-1 to 4.4 mg L-1 of Copper. A further advantage of estimation of Copper using this reagent is that, an extraction procedure is not necessary and analytical procedure is therefore very simple. Estimation of Zinc and Cadmium can be done at pH 4.45.

Item Type: Article
Subjects: B Life Science > Environmental Science
Divisions: Department of > Environmental Science
Depositing User: manjula User
Date Deposited: 28 Aug 2019 09:15
Last Modified: 28 Aug 2019 09:15
URI: http://eprints.uni-mysore.ac.in/id/eprint/7238

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