Reference number
ISO 7766-1:1993
ISO 7766-1:1993
Photography — Processing wastes — Analysis of cyanides — Part 1: Determination of hexacyanoferrate(II) and hexacyanoferrate(III) by spectrometry
Edition 1
1993-01
Retirada
ISO 7766-1:1993
14631
Retirada (Edición 1, 1993)

Resumen

The principle of the test method specified is treating a sample of effluent, or diluted effluent, with a mixture of iron(II) and iron(III) ions. If Fe(CN)6 is present, a blue suspension will form. In the range of 1,0 mg/l to 10,0 mg/l, this suspension is stable and its absorbance is linear with its concentration. The absorbance is measured with a spectrometer, and the concentration determined from a previously established calibration.

Informaciones generales

  •  : Retirada
     : 1993-01
    : Retirada de la Norma Internacional [95.99]
  •  : 1
     : 5
  • ISO/TC 42
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