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.
Status: PublishedPublication date: 1978-05
Edition: 1Number of pages: 3
Technical Committee: ISO/TC 34/SC 3 Fruits and vegetables and their derived products
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