Криолит природный и искусственный и фтористый алюминий технический. Определение содержания фосфора. Спектрометрический метод атомной абсорбции после экстракции
Название (англ.):
Cryolite, natural and artificial, and aluminium fluoride for industrial use; Determination of phosphorus content; Atomic absorption spectrometric method after extraction
Описание (англ.):
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 molybdenumhollow-cathode lamp.
Дата регистрации:
01.01.82
Дата введения:
01.10.81
Код КГС:
Л19
Код ОКСТУ:
2154;2109
Код ОКС(МКС):
71.060.50
Код ОКП:
2154;2109
Нормативные ссылки:
BS 4993 PART 10-1983, EQV*NBN T 03-450-1983, EQV*NF T20-161-1984, EQV
Ключевые слова:
ALUMINIUM INORGANIC COMPOUNDS ALUMINIUM ORES ATOMIC ABSORPTION METHOD ATOMIC ABSORPTION SPECTROPHOTOMETRY CRYOLITE DETERMINATION OF CONTENT FLUORIDES INDUSTRIES METAL INDUSTRY METALS PHOSPHORUS TESTING TESTS ALUMINIUM INO ATOMIC ABSO