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ISO 6374:1981

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Cryolite, natural and artificial, and aluminium fluoride for industrial use -- Determination of phosphorus content -- Atomic absorption spectrometric method after extraction

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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.


SDO ISO: International Organization for Standardization
Document Number ISO 6374
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 47/SC 7
Publish Date Document Id Type View
Not Available ISO 6374:1981 Revision