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Spectrophotometric determination of nitrite

โœ Scribed by S.T. Sulaiman; D. Amin


Publisher
Elsevier Science
Year
1984
Tongue
English
Weight
204 KB
Volume
29
Category
Article
ISSN
0026-265X

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Nitrite reacts with 3-nitroaniline in the presence of hydrochloric acid to form a diazonium cation, which is subsequently coupled with N-(1-naphtyl)ethylenediammonium chloride to form a stable purple azo dye. The method is suitable for the determination of 0.01-0.80 pg ml-' nitrite. The reactions ar

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A spectrophotometric flow-injection method based on a diazo-coupling reaction is proposed for the simultaneous determination of nitrite and nitrate. Nitrate is reduced to nitrite by using a reductor column which is formed by filling part of the sample loop with copperized cadmium. The flow system pr