Abstract 

Applicable to products having As contents more than 0.2 mg/kg. The principle consists in reduction of the element to arsine in a solution of silver diethyldithiocarbamate in pyridine. Photometric measurement of the purplish- red colour produced by the colloidally dispersed silver, at the maximum of the absorption curve (wavelength approximately 540 nm).


General information

  • Status :  Withdrawn
    Publication date : 1977-11
  • Edition : 1
    Number of pages : 2
  • :
    ISO/TC 47
    Chemistry
  • 67.220.20
    Food additives
    71.060.50
    Salts

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