Norm

ISO 6635:1984 en

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

31,57

Over deze norm

Status Definitief
Aantal pagina's 4
Commissie Beleidscommissie Landbouw & Levensmiddelen
Gepubliceerd op 01-11-1984
Taal Engels
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.

Details

ICS-code 67.080.01
Nederlandse titel Fruits, vegetables and derived products - Determination of nitrite and nitrate content - Molecular absorption spectrometric method
Engelse titel Fruits, vegetables and derived products - Determination of nitrite and nitrate content - Molecular absorption spectrometric method

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