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ISO 6374:1981
Cryolite, natural and artificial, and aluminium fluoride for industrial use -- Determination of phosphorus content -- Atomic absorption spectrometric method after extraction
This standard has been reviewed and then confirmed in 2012
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Abstract
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.
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Edition: 1 (Monolingual) ICS: 71.060.50 Status: Published Stage: 90.93 (2012-10-04) TC/SC: ISO/TC 226 Number of Pages: 4 -
No revision information available
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No corrigenda or amendments available
