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| Название (рус.): | Криолит природный и искусственный. Определение содержания алюминия. Метод атомной абсорбции |
| Название (англ.): | Cryolite, natural and artificial; Determination of aluminium content; Atomic absorption method |
| Описание (англ.): | Applicable to products having a normal composition for which the molar ratio NaF/AlF3 is equal to about 3. Dissolution of a test portion in concentrated suphuric acid and elimination of hydrogen fluoride. Treatment with hydrochloric acid and water. Atomization of the solution into an acetylene measurement of the absorption of the 309.3 nm line emitted by an aluminium hollow cathode lamp. Has also been approved by the IUPAC. |
| Дата регистрации: | 10.01.74 |
| Дата введения: | 01.12.73 |
| Код КГС: | А39 |
| Код ОКСТУ: | 2154;2109 |
| Код ОКС(МКС): | 71.060.50 |
| Код ОКП: | 2154;2109 |
| Нормативные ссылки: | BS 5050-1974, NEQ*NBN T 03-440-1983, EQV |
| Ключевые слова: | ALUMINIUM ATOMIC ABSORPTION METHOD ATOMIC ABSORPTION SPECTROPHOTOMETRY CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CRYOLITE DETERMINATION OF CONTENT PHOTOMETRY ATOMIC ABSO CHEMICAL ANALYSIS AND TESTIN |
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