Galil, Mansour S. Abdul and Mahadevaiah and Yogendra Kumar, M. S. and Nagendrappa, G. (2007) A simple and rapid spectrophotometric method for the determination of nitrite by its decolorizing effect on peroxovanadate complex. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 67 (1). 76 - 82. ISSN 1386-1425
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A rapid, simple, and most economical spectrophotometric method was proposed for the determination of nitrite in various water samples, soil samples, and roots of leguminous plants. The method is based on decolorizing effect of nitrite on complex formed between hydrogen peroxide and vanadate in acidic medium. The decolorization of that complex by nitrite was exploited to monitor the reaction spectrophotometrically at 470nm.The method was optimized for effect of concentrations of ammonium metavanadate, hydrogen peroxide, various acids, concentrations of sulphuric acid, order of reagents addition and color stability. The color of the complex was found to be stable for about 2 days, and the stability constant of the complex was also calculated by modified Job's method. The linearity range of the calibration graph was over 6.67–66.7μgml−1 of nitrite with molar absorptivity, 0.276×103mol−1lcm−1 and Sandell's sensitivity, 0.1667μgcm−2. The method was applied successfully for the determination of nitrite in soil samples, various wastewater samples and roots of leguminous plants.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Nitrite determination, Peroxovanadate, Nitrite in water, Soil, Spectrophotometry |
| Subjects: | C Chemical Science > Chemistry |
| Divisions: | Department of > Chemistry |
| Depositing User: | C Swapna Library Assistant |
| Date Deposited: | 17 Sep 2019 06:27 |
| Last Modified: | 17 Sep 2019 06:27 |
| URI: | http://eprints.uni-mysore.ac.in/id/eprint/8204 |
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