ISO 3360:1976
p
ISO 3360:1976
8646

Applicable to products the F content of which is equal to or more than 0.5 mg/kg. Specifies the separation of the element from a test portion by steam distillation in a phosphoric acid medium. Formation of a blue-coloured complex with a combined reagent alizarin complexone/lanthanum nitrate in a buffered medium at the pH of 4.6. Addition of acetone to increase the stability of the complex and the sensitivity. Photometric measurement of the complex at a wavelength of about 600 nm.


Informations générales 

  •  : Publiée
     : 1976-08
  •  : 1
     : 5
  •  : ISO/TC 47 Chimie
  •  :
    67.220.20 Additifs alimentaires
    71.060.30 Acides
    71.060.50 Sels

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fr
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std 1 40 PDF
std 2 40 Papier
  • CHF40

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