ISO 6374:1981
Cryolite, natural and artificial, and aluminium fluoride for industrial use; Determination of phosphorus content; Atomic absorption spectrometric method after extraction
- Standard No.
- ISO 6374:1981
- Release Date
- 1981
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 6374:1981
- Scope
- 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.
ISO 6374:1981 history
- 1981 ISO 6374:1981 Cryolite, natural and artificial, and aluminium fluoride for industrial use; Determination of phosphorus content; Atomic absorption spectrometric method after extraction
