International Standard
ISO 6374:1981
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Atomic absorption spectrometric method after extraction
Reference number
ISO 6374:1981
Edition 1
International Standard
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ISO 6374:1981
Published (Edition 1, 1981)
This standard was last reviewed and confirmed in 2024. Therefore this version remains current.

ISO 6374:1981

ISO 6374:1981
CHF 42
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Specifies a method based on the fusion of a test portion with sodium carbonate and boric acid and dissolution in perchloric acid solution, followed by formation of the ammonium molybdophosphate complex and extraction of the complex with isobutyl acetate. The solution is absorbed into an acetylene/dinitrogen monoxide flame and the molybdenum, and hence the phosphorus, is determined by measuring the absorbance of the 379,8 nm line emitted by a molybdenum hollow-cathode lamp.

General information

  •  : Published
     : 1981-10
    : International Standard confirmed [90.93]
  •  : 1
     : 4
  • ISO/TC 226
  • RSS updates

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