Spectrophotometric analysis with sulphanilic acid and 1-naphthylamine

1 Spectrophotometric analysis with sulphanilic acid and 1-naphthylamine 

In acid solution, nitrite ions and aromatic amines together form diazonium salts, which for their part couple with aromatic amines to form intensively 

The method is suitable for the determination of nitrite ions in water in 

In order to prevent secondary formation of nitrite ions by microbial or chemical redox reactions from ammonium ions or nitrate ions, nitrite 

It is possible to compensate for slight turbidity or self-coloration in the 

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