Published
The method consists in decomposing of organic matter, neutralizing of the solution obtained, adding of 1,5-diphenylthiocabazone solution, extracting of the zinc complex thus furmed with chloroform and measuring of the absorbance of the extract at a wavelength of 538 nm.
PUBLISHED
ISO 6636-3:1983
90.93
Standard confirmed
Aug 26, 2024
Fruit and vegetable products — Determination of zinc content — Part 3: Dithizone spectrometric method
90.93 Standard confirmed