ISO 6374:1981
Current
The latest, up-to-date edition.
Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Atomic absorption spectrometric method after extraction
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English, French
01-10-1981
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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.
| Committee |
ISO/TC 226
|
| DevelopmentNote |
Also numbered as BS 4993-10(1983) and BS 5050-13(1988). (07/2005)
|
| DocumentType |
Standard
|
| Pages |
4
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| NBN T 03 450 : 1983 | Identical |
| NFT 20 161 : 84 FD | Identical |
| ISO/TR 4277:2009 | Cryolite, natural and artificial Conventional test for evaluation of free fluorides content |
| PD ISO/TR 4277:2009 | Cryolite, natural and artificial. Conventional test for evaluation of free fluorides content |
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