Aktivní norma | Vydána: 01.07.1976

ISO 3429:1976

Sodium fluoride primarily used for the production of aluminium — Determination of iron content — 1,10- Phenanthroline photometric method
(Fluorure de sodium principalement utilisé pour la production de l´aluminium — Dosage du fer — Méthode photométrique a la phénanthroline-1,10)

Dostupné jazyky: Anglicky, Francouzsky

Dostupné provedení: Elektronické PDF, Tištěné

od 1 359.10 CZK zobrazit na eshopu

Podrobné informace

Označení: ISO 3429:1976

Datum vydání: 01.07.1976

Stran: 4

Země: Mezinárodní technická norma

Kde koupit?

Můžete zakoupit na eshop.normservis.cz

Anotace

Description / Abstract: Applicable to the determination of Fe contents, expressed as Fe2 O3 , of more than 0.020 % (m/m). Covers the dissolution of a test portion by alkaline fusion by means of sodium carbonate and boric acid. Dissolving of the residue with nitric acid solution and reduction of iron(III) by means of hydroxylammonium chloride. Formation of the iron(II)-1,10-phenanthroline complex in a buffered medium at a pH between 3.5 and 4.2. Photometric measurement of the coloured complex at a wavelength of about 510 nm.

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