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SSH ISO 6635:1984

Fruits, vegetables and derived products — Determination of nitrite and nitrate content — Molecular absorption spectrometric method

Nov 23, 2022

General information

60.60     Nov 23, 2022

DPS

DPS/KT 360

International Standard

67.080.01  

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The method consists in extracting a test portion with hot water, precipitating the protein by addition of solutions of potassium hexacyanoferrate(II) and zinc acetate, and filtrating the precipitate. Further, reduction of the nitrate to nitrite by metallic cadmium (only for determining the nitrate). Then addition of sulfanilamide chloride and N-(1-naphtyl)ethylenediamine and measurement of the red complex obtained at a wavelength of 538 nm.

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PUBLISHED
SSH ISO 6635:1984
60.60 Standard published
Nov 23, 2022

Related project

Adopted from ISO 6635:1984

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