A New Spectrophotometry Reagent for the Determination of Nitrite in Polluted Water

P. Nagaraja; M. S. Hemantha Kumar; K. S. Rangappa; L. Mahesh Bilwa

Article | Open Access

A New Spectrophotometry Reagent for the Determination of Nitrite in Polluted Water

P. Nagaraja, M. S. Hemantha Kumar, K. S. Rangappa and L. Mahesh Bilwa

Department of Chemistry, Studies in Environmental Science, Geology, Mysore University, Manasagangothri, Mysore - 570 006 India.

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ABSTRACT:

A new sensitive spectrophotometric method is developed for the determination of nitrite with p-aminobenzoic acid coupled with N-1-(Naphthylethylene diamine dihydro chloride) in acid medium. Beer's law is obeyed in the range of nitrite concentration of 0.05-1.2 μg ml-1 and the molar absorptivity at 550 nm is 2.74 x 10-4 l.mole-1. cm-1. Results obtained by using the proposed method for water samples agree well with those obtained by Saltzman standard method.

KEYWORDS:

Spectrophotometric; p-aminobenzoic; Naphthylethylene; diamine