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ISO 2069:1976

Aluminium oxide primarily used for the production of aluminium — Determination of calcium content — Flame atomic absorption method
1. 8. 1976.
95.99   Povučen   4. 2. 2016.

Опште информације

95.99     4. 2. 2016.

ISO

ISO/TC 226

Međunarodni standard

71.100.10  

francuski   engleski  

Kupovina

Povučen

Jezik na kome želite da primite dokument.

Apstrakt

This method is applicable to products having Ca contents greater than 0,003 % (m/m). The principle consists in dissolution of a test portion by the influence of hydrochloric acid under pressure. Addition of sodium ions to promote and to stabilize the emission of calcium, and of lanthanum ions or triethanolamine to increase the sensitivity. Aspiration of the solution into an acetylene-dinitrogen monoxide flame and photometric measurement of the absorption of the 422,7 nm line emitted by a hollow-cathode calcium lamp. For the determination of higher CaO contents (over about 0,03 % (m/m)) an acetylene-air flame can be used. Replaces ISO Recommendation R 2069-1971.

Životni ciklus

TRENUTNO

POVUČEN
ISO 2069:1976
95.99 Povučen
4. 2. 2016.

Nacionalna preuzimanja

SRPS H.B8.607:1979  
ISS

Ispitivanje tehničkog aluminijum-oksida - Određivanje sadržaja kalcijuma - Metoda atomske apsorpcije

95.99   Povučen

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