Spectrophotometric Determination of Nitrous Acid in the Aqueous Streams of Fast Reactor Fuel Reprocessing by using Azo dye Method
M.Suba, P.Velavendan, N.K. Pandey, C. Mallika and U. Kamachi Mudali
DOI:
Volume 4, Issue 3 | Pages: 321-326
Abstract
A simple spectrophotometric method is optimized for the determination of nitrous acid in nitric acid media. This
method is based on the diazotization reaction of nitrous acid with sulfanilamide and N-(1-naphthyl)-ethylene
diamine dihydrochloride forming a bright pink colored azo compound. This complex is having an absorbance at
540 nm with molar extinction coefficient of 26,530 L mol−1 cm−1 and 16,990 L mol−1 cm−1 for water and nitric
acid dilution, respectively; the relative standard deviation was found to be <2% and the detection limit was
1 ppm. The interference studies of nitrous acid determination with uranium and zirconium were carried out, and
there is no interference in nitrous acid determination in the range of concentration studied; hence, the optimized
method can be employed for the determination of nitrous acid in plant samples.
Keywords
Plutonium-uranium recovery by extraction Nitrous acid Chromogenic agent Spectrophotometry.References
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Citation
M.Suba, P.Velavendan, N.K. Pandey, C. Mallika and U. Kamachi Mudali. Spectrophotometric Determination of Nitrous Acid in the Aqueous Streams of Fast Reactor Fuel Reprocessing by using Azo dye Method. J Appl Pharm Sci. 2016; 4(3):321-326.