Fruits, vegetables and derived products — Determination of iron content — 1,10- Phenanthroline photometric method
NORMA vydána dne 1.5.1978
Označení normy: ISO 5517:1978
Datum vydání normy: 1.5.1978
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO
Description / Abstract: The method consists in decomposing the organic matter, followed by reduction of trivalent iron by hydroxyammonium chloride, forming, in a buffered medium, of the stable iron(II)/1,10 phenanthroline complex, and photometric measuring of the red-coloured complex at a wavelength of 508 nm.