Norm

ISO 9061:1993 en

Acid-grade and ceramic-grade fluorspar - Determination of iron content - 1,10-Phenanthroline spectrometric method

  • Deze norm is ingetrokken sinds 19-05-2010

31,57

Over deze norm

Status Ingetrokken
Aantal pagina's 4
Gepubliceerd op 18-03-1993
Taal Engels
The method specified is based on alkaline fusion of a test portion with a mixture of sodium carbonate and boric acid, dissolution of the melt in excess hydrochloric acid, reduction of the iron(III) with hydroxylammonium chloride, formation of the iron(II)-1,10-phenanthroline complex in a buffered medium (pH between 3 and 5), spectrometric measurement of the absorbance of the coloured complex at a wavelength of about 510 nm, corresponding to the absorption maximum. Applies to products having iron contents, expressed as FeO, in the range 0,1 % (m/m) to 2,0 % (m/m).

Details

ICS-code 73.080
Nederlandse titel Acid-grade and ceramic-grade fluorspar - Determination of iron content - 1,10-Phenanthroline spectrometric method
Engelse titel Acid-grade and ceramic-grade fluorspar - Determination of iron content - 1,10-Phenanthroline spectrometric method

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