A facile spectrophotometric determination of nitrite using diazotization with p-nitroaniline and coupling with acetyl acetone

Revanasiddappa, H. D. and Kiran Kumar, and Mahesh Bilwa, (2001) A facile spectrophotometric determination of nitrite using diazotization with p-nitroaniline and coupling with acetyl acetone. MIKROCHIMICA ACTA, 137 (3-4). pp. 249-253.

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Official URL: http://dx.doi.org/10.1007/s006040170018

Abstract

A simple and sensitive spectrophotometric method is described for the determination of nitrite in water and soil samples. The method is based on the reaction of nitrite with p-nitroaniline to form a diazonium ion, which is coupled with a new coupling agent, acetyl acetone in an alkaline medium. The dye shows an absorption maximum at 490 nm and obeys Beer's law over a range of 0.5 to 14 mug nitrite per 10 mL analyte. The molar absorptivity of the colour system is 3.2 x 10(4) L mol(-1) cm(-1). The relative standard deviation is 2.7% (n = 10). The dye formed is stable for 3 h. The effect of interfering ions on the determination is described. The method has been suggested for the determination of nitrite in water and soil samples. The results obtained were compared with the standard N-(1-naphthyl) ethylenediamine dihydrochloride method.

Item Type: Article
Uncontrolled Keywords: nitrite determination; spectrophotometry; acetyl acetone; diazotization
Subjects: Physical Sciences > Chemistry
Physical Sciences > Earth Science
Divisions: PG Campuses > Manasagangotri, Mysore > Chemistry
PG Campuses > Manasagangotri, Mysore > Earth Science
Depositing User: Users 12 not found.
Date Deposited: 24 Apr 2013 11:40
Last Modified: 13 Aug 2013 05:09
URI: http://eprints.uni-mysore.ac.in/id/eprint/4818

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