A spectrophotometric assay method for vanadium in biological and environmental samples using 2,4-dinitrophenylhydrazine with imipramine hydrochloride

Ghallab, Saeed Al-Tayar Naef and Nagaraja, P. and Vasantha, R. A. and Shrestha, Ashwinee Kumar (2012) A spectrophotometric assay method for vanadium in biological and environmental samples using 2,4-dinitrophenylhydrazine with imipramine hydrochloride. ENVIRONMENTAL MONITORING AND ASSESSMENT, 184 (1). pp. 181-191.

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Abstract

A simple, rapid, and sensitive method involving the interaction of 2,4-dinitrophenylhydrazine with imipramine hydrochloride in presence of vanadium (V) in sulfuric acid medium has been proposed for the determination of vanadium. The purple-colored product developed showed an absorption maximum at 560 nm and was stable for 24 h. The working curve was linear over the concentration range of 0.1-2.8 mu g ml (-aEuro parts per thousand 1), with sensitivity of detection of 0.0124 mu g ml (-aEuro parts per thousand 1). Molar absorptivity and Sandell's sensitivity were found to be 2.6 x 10(4) l/mol cm and 0.0039 mu g cm (-aEuro parts per thousand 1), respectively. The accuracy of the proposed method was assessed by Student's t test and variance ratio F test, and the results were on par with the reported method. The method was successfully used in the determination of V in water, human urine, soil, and plant samples, and it was free from interference by various concomitant ions.

Item Type: Article
Uncontrolled Keywords: Vanadium; 2,4-Dinitrophenylhydrazine; Imipramine hydrochloride; Spectrophotometry; Environmental samples; Biological samples
Subjects: Physical Sciences > Chemistry
Divisions: PG Campuses > Manasagangotri, Mysore > Chemistry
Depositing User: Swamy D
Date Deposited: 27 May 2013 14:08
Last Modified: 02 Nov 2015 11:27
URI: http://eprints.uni-mysore.ac.in/id/eprint/9499

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