This standard was last reviewed and confirmed in 2019. Therefore this version remains current.
The method is applicable to products having a content equal to or greater than 0,1 mg/kg. The principle concists in reduction of the iron(III) by hydroxylammoniumchloride. Formation of a iron(II)-1,10-phennanthroline complex in a buffered solution. Photometric measurement of the coloured complex at a wavelength of about 510 nm.
Status : PublishedPublication date : 1973-04
Edition : 1Number of pages : 2
Buy this standard