Alkaline fusion of a test portion by sodium carbonate and subsequent neutralization by sulphuric acid. Measurement of the absorption of the complex formed by chromium and diphenylcarbazide at a wavelength of abour 540 nm after adding sodium azide for elimination of the colour caused by manganese.

General information

  • Status :  Withdrawn
    Publication date : 1976-04
  • Edition : 1
    Number of pages : 3
  • :
    ISO/TC 47
  • 71.060.01
    Inorganic chemicals in general

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