Spectrophotometric method for the determination of chromium (VI) in water samples

Nagaraj, P. and Aradhana, N. and Shivakumar, A. and Shrestha, Ashwinee Kumar and Gowda, Avinash K. (2009) Spectrophotometric method for the determination of chromium (VI) in water samples. ENVIRONMENTAL MONITORING AND ASSESSMENT, 157 (1-4). pp. 575-582. ISSN 0167-6369

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Official URL: http://doi.org/10.1007/s10661-008-0557-2

Abstract

A simple and sensitive spectrophotometric method for the determination of chromium has been developed. The method is based on the diazotization of Dapsone in hydroxylamine hydrochloride medium and coupling with N-(1-Napthyl) Ethylene Diamine Dihydrochloride by electrophilic substitution to produce an intense pink azo-dye, which has absorption maximum at 540 nm. The Beer's law is obeyed from 0.02-1.0 mu g mL(-1) and the molar absorptivity is 3.4854 L mol(-1) cm(-1). The Limits of quantification and Limit of detection of the proposed method are 0.0012 mu g mL(-1) and 0.0039 mu g mL(-1) respectively. The method has been successfully applied for the determination of chromium in water samples and the results were statistically evaluated with that of the reference method.

Item Type: Article
Uncontrolled Keywords: Chromium (VI) determination; Dapsone; N-(1-Napthyl) Ethylenediamine dihydrochloride; Spectrophotometry
Subjects: C Chemical Science > Chemistry
Divisions: Department of > Chemistry
Depositing User: Shrirekha N
Date Deposited: 17 Aug 2019 10:25
Last Modified: 17 Aug 2019 10:25
URI: http://eprints.uni-mysore.ac.in/id/eprint/6687

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