Aktivní norma | Vydána: 01.10.1981

ISO 6374:1981

Cryolite, natural and artificial, and aluminium fluoride for industrial use — Determination of phosphorus content — Atomic absorption spectrometric method after extraction
(Cryolithe, naturelle et artificielle, et fluorure d´aluminium a usage industriel — Dosage du phosphore — Méthode par spectrométrie d´absorption atomique apres extraction)

Dostupné jazyky: Anglicky, Francouzsky

Dostupné provedení: Elektronické PDF, Tištěné

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Podrobné informace

Označení: ISO 6374:1981

Datum vydání: 01.10.1981

Stran: 4

Země: Mezinárodní technická norma

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Anotace

Description / 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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