ISO 6635:1984

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

Publication date: 1 nën 1984

General information

Current stage: 90.93 Effective date: 13 jan 2022

Originator: ISO

Owner: ISO/TC 34/SC 3

Type: International Standard

ICS: 67.080.01

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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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
ISO 6635:1984
90.93 Standard confirmed
13 jan 2022

REVISED BY

ABANDON
ISO/DIS 6635

National adoptions

SSH ISO 6635:1984

DPS

Fruta, perime dhe produkte që rrjedhin prej tyre - Përcaktimi i përmbajtjes së nitriteve dhe nitrateve - Metoda spektrometrike e përthithjes molekulare

60.60 Standard published

DPS/KT 360 më tepër