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| Название (рус.): | Фосфаты конденсированные технические (в том числе для пищевой промышленности). Определение содержания кальция. Спектрометрический метод атомной абсорбции в пламени |
| Название (англ.): | Condensed phosphates for industrial use (including foodstuffs); Determination of calcium content; Flame atomic absorption spectrometric method |
| Описание (англ.): | Applicable to products having Ca contents equal to or more than 50 mg/kg. The presence of soluble SiO2 up to 5 g/ml in the test solution does not interfere. Hydrolysis by boiling a test portion in hydrochloric acid medium. Addition of sodium ions, until a constant concentration isobtained, to stabilize the promotion and emission of Ca; addition of lanthanum chloride to increase the sensitivity of the method. Aspiration of the solution into a dinitrogen monoxide-acetylene flame. Spectrometric measurement of the absorption of the 422.7-nm line emitted by a hollow-cathode calcium lamp. Has also been approved by the IUPAC. |
| Дата регистрации: | 01.01.82 |
| Дата введения: | 01.11.81 |
| Код КГС: | Л19 |
| Код ОКСТУ: | 2148;2109 |
| Код ОКС(МКС): | 67.220.20; 71.060.50 |
| Код ОКП: | 2148;2109 |
| Нормативные ссылки: | BS 4427 PART 13-1982, EQV*NBN T 03-314-1984, EQV*NF T20-500-1982, EQV*UNE 55-752-84-1984, EQV |
| Ключевые слова: | ATOMIC ABSORPTION METHOD ATOMIC ABSORPTION SPECTROPHOTOMETRY CALCIUM CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT FOOD ADDITIVES FOOD INDUSTRY INDUSTRIAL PRODUCTS INDUSTRIES ORTHOPHOSPHATES PHOSPHATES ATOMIC ABSO CHEMICAL ANALYSIS AND TESTIN |
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