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SRPS ISO 6635:2011

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

Jan 31, 2011

General information

90.93     May 3, 2016

90.20    Apr 15, 2021

ISS

E034-3

International Standard

67.080.01  

English  

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Scope

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.

Life cycle

NOW

PUBLISHED
SRPS ISO 6635:2011
90.93 Standard confirmed
May 3, 2016

Related project

Adopted from ISO 6635:1984