Standard

ISO 3360:1976

Actuel

Amendements et versions existants ou nouveaux doivent être achetés séparément.

Langue
Format

Résumé

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.

Spécifications des produits

  • Standard de ISO
  • Publié:
  • Version: 1
  • Type de document: IS
  • Pages
  • Editeur: ISO
  • Distributeur: ISO
  • ICS: 67.220.20
  • ICS: 71.060.30
  • ICS: 71.060.50
  • Comité international: ISO/TC 47