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| Название (рус.): | Глинозем, преимущественно используемый для производства алюминия. Определение содержания фосфора. Спектрофотометрический метод с применением восстановленного фосфомолибдата |
| Название (англ.): | Aluminium oxide primarily used for the production of aluminium; Determination of phosphorus content; Reduced phosphomolybdate spectrophotometric method |
| Описание (англ.): | Applicable to products having phosphorus contents of more than 0.0005 % (m/m). Preparation of a solution from a test portion by alkaline fusion either with a mixture of sodium carbonate and borid or of sodium carbonate and sodium tetraborate. Dissolution of thecooled molten mass in nitric acid and adjustment of an appropriate aliquot portion to pH 2. Formation of a phosphomolybdic complex and extraction by 2-methylpropan-1-ol in a sulphuric acid medium. Reduction of the complex by thin(II) chloride in the organic phase and spectrophotometric measurement of the reduced complex at a wavelength of about 730 nm. Has also been approved by the IUPAC. |
| Дата регистрации: | 11.02.74 |
| Дата введения: | 01.12.73 |
| Код КГС: | А39 |
| Код ОКСТУ: | 1711;1709 |
| Код ОКС(МКС): | 71.100.10 |
| Код ОКП: | 1711;1709 |
| Нормативные ссылки: | BS 4140 PART 18-1986, EQV*NBN T 03-419-1983, EQV*NF T20-215-1973, EQV |
| Ключевые слова: | ALUMINIUM ALUMINIUM OXIDE CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT PHOSPHORUS PRODUCTION SPECTROPHOTOMETRY CHEMICAL ANALYSIS AND TESTIN |
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