Sensitive spectrophotometric methods for the assessment of nitrite in water sample

Nagaraja, P. and Prakash, J. S. and Shivakumar, A. and Ashwinee Kumar, S. (2008) Sensitive spectrophotometric methods for the assessment of nitrite in water sample. Environmental Monitoring and Assessment, 147 (1-3). pp. 235-241. ISSN 1573-2959

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Abstract

Two spectrophotometric methods have been developed for the determination of nitrite using dapsone (DAP) with α-naphthol and 4-amino-5-hydroxynapthalene-2,7-disulphonic acid monosodium salt (AHNDMS) as chromogenic reagents with maximum absorbance wavelength at 540 and 520 nm respectively. For the method that utilizes dapsone with α-naphthol (DAP-α-naphthol), the beer’s law range is obeyed between 0.05–0.8 μg ml−1 with molar absorptivity of 5.749 × 104 l mol−1 cm−1. The second method that uses dapsone with AHNDMS (DAP–AHNDMS), the beer’s law is valid over the range 0.2–1.4 μg ml−1 and molar absorptivity 2.44 × 104 l mol−1 cm−1. The common interfering ions in the analytical procedures have been studied. This proposed methods are reliable, reproducible and have been successfully applied to determine nitrite in various water sources of environmental interest.

Item Type:	Article
Subjects:	C Chemical Science > Chemistry
Divisions:	Department of > Chemistry
Depositing User:	Manjula P Library Assistant
Date Deposited:	16 Aug 2019 07:14
Last Modified:	16 Aug 2019 07:14
URI:	http://eprints.uni-mysore.ac.in/id/eprint/6424

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