International Standard
ISO 6635:1984
Fruits, vegetables and derived products — Determination of nitrite and nitrate content — Molecular absorption spectrometric method
Reference number
ISO 6635:1984
Edición 1
1984-11
International Standard
Vista previa
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ISO 6635:1984
13052
No disponible en español
Publicado (Edición 1, 1984)
Esta norma se revisó y confirmó por última vez en 2022. Por lo tanto, esta versión es la actual.

ISO 6635:1984

ISO 6635:1984
13052
Formato
Idioma
CHF 42
Convertir Franco suizo (CHF) a tu moneda

Resumen

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.

Informaciones generales

  •  : Publicado
     : 1984-11
    : Norma Internacional confirmada [90.93]
  •  : 1
     : 4
  • ISO/TC 34/SC 3
    67.080.01 
  • RSS actualizaciones

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