New spectrophotometric method for the determination of nitrite in water

Revanasiddappa, H. D. and Kiran Kumar, T. N. (2001) New spectrophotometric method for the determination of nitrite in water. FRESENIUS ENVIRONMENTAL BULLETIN, 10 (10). pp. 781-785.

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Abstract

A selective and rapid spectrophotometric method for the determination of nitrite is presented. It relies on the reaction of nitrite with p-aminoacetophenone to form a diazonium ion, which is coupled with citrazinic acid in a basic medium to form an azo dye, which shows an absorption maximum at 495 nm. The colour is stable for 3h. Beer's law is obeyed in the range of 0.5 to 12 mug of nitrite in a final volume of 10 ml, with a molar absorptivity and its Sandell's sensitivity are 2.9 x 10(4) l mol(-1) cm(-1) and 16 ng cm(-2), respectively. The optimum reaction conditions and other analytical parameters are evaluated. The method has been successfully applied to the determination of nitrite in natural waters.

Item Type: Article
Uncontrolled Keywords: spectrophotometry; p-aminoacetophenone; citrazic acid; nitrite determination
Subjects: Physical Sciences > Environmental Science
Divisions: PG Campuses > Manasagangotri, Mysore > Chemistry
Depositing User: Users 12 not found.
Date Deposited: 19 Apr 2013 09:43
Last Modified: 20 Aug 2013 04:58
URI: http://eprints.uni-mysore.ac.in/id/eprint/4742

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