Nagaraj, P. and Aradhana, N. and Shivakumar, A. and Shrestha, Ashwinee Kumar and Avinash Gowda, 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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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: | Users 19 not found. |
| Date Deposited: | 17 Aug 2019 10:25 |
| Last Modified: | 12 Jul 2022 05:50 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/6687 |
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