ISO 4275:1977
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ISO 4275:1977
10115

Тезис

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).


Общая информация 

  •  : Отозвано
     : 1977-11
  •  : 1
  •  : ISO/TC 47 Chemistry
  •  :
    67.220.20 Food additives
    71.060.50 Salts

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