ISO 5517:1978

Current Revision
Fruits, vegetables and derived products -- Determination of iron content -- 1,10- Phenanthroline photometric method

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ISO 5517:1978

Fruits, vegetables and derived products -- Determination of iron content -- 1,10- Phenanthroline photometric method

PUBLISH DATE 1978
ISO 5517:1978

The method consists in decomposing the organic matter, followed by reduction of trivalent iron by hydroxyammonium chloride.

This forms, in a buffered medium, the stable iron(II)/1,10 phenanthroline complex.

Photometric measuring of the red-coloured complex is performed at a wavelength of 508 nm.

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