Глинозем, преимущественно используемый для производства алюминия. Определение содержания кальция. Метод атомной абсорбции в пламени
Название (англ.):
Aluminium oxide primarily used for the production of aluminium; Determination of calcium content; Flame atomic absorption method
Описание (англ.):
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 ofcalcium, 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.
Дата введения:
01.08.76
Код КГС:
А39
Код ОКСТУ:
1711;1709
Код ОКС(МКС):
71.100.10
Код ОКП:
1711;1709
Нормативные ссылки:
NBN T 03-413-1983, EQV*NF T20-210-1973, EQV
Ключевые слова:
ALUMINIUM ALUMINIUM OXIDE ATOMIC ABSORPTION METHOD ATOMIC ABSORPTION SPECTROPHOTOMETRY CALCIUM CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT PRODUCTION ATOMIC ABSO CHEMICAL ANALYSIS AND TESTIN