ISO 983:1974
ISO 983:1974


Specifies a method that is more sensitive and more widely used than the 2,2'-bipyridyl method. It is applicable to products having iron contents equal to or greater than 0.5 mg/kg. The principle is based on the reduction of trivalent iron by hydroxylammonium chloride, formation of a bivalent iron/1,10-phenanthroline complex in a buffered system. Photometric measurement of the coloured complex at a wavelength of about 510 nm. This method has also been approved by the IUPAC. - Cancels and replaces ISO Recommendation R 983-1969.

Общая информация 

  •  :  Withdrawn
     : 1974-12
  •  : 1
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.40 Bases

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