Калий едкий технический. Определение содержания кальция и магния. Метод атомной абсорбции в пламени
Название (англ.):
Potassium hydroxide for industrial use; Determination of calcium and magnesium contents; Flame atomic absorption method
Описание (англ.):
Applicable to products having contents of more than 2.5 mg Ca/kg and 0.5 mg Mg/kg if an acetylene-air flame is used or 0.6 mg Ca/kg and 1.0 mg Mg/kg if an acetylen-dinitrogen monoxide flame is used. The principle consists in the acidification of a test portion with hydrochloric acid, aspiration of the solution into an acetylene-dinitrogen monoxide flameor acetylene-air flame. In the latter case, addition of lanthanum ions in order to suppress certain interferences. Measurement of the absorption of the 422.7-nm and 285.2-nm lines emitted by calcium and magnesium hollow-cathode lamps.
Дата регистрации:
10.01.77
Дата введения:
01.12.76
Дата отмены:
01.09.02
Код КГС:
Л19
Код ОКСТУ:
2133;2109
Код ОКС(МКС):
71.060.40
Код ОКП:
2133;2109
Нормативные ссылки:
BS 5634-1978, NEQ*NBN T 03-199-1980, EQV*NF T20-386-1977, EQV*NP-1609-1979, EQV
Ключевые слова:
CALCIUM CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CHEMICAL COMPOUNDS CONNECTIONS DETERMINATION OF CONTENT FLAME PHOTOMETRIC ANALYSIS FLAME PHOTOMETRY MAGNESIUM POTASSIUM HYDROXIDE POTASSIUM HYDROXIDES SPECTROPHOTOMETRIC ANALYSIS SPECTROPHOTOMETRY CHEMICAL ANALYSIS AND TESTIN