Глинозем, преимущественно используемый для производства алюминия. Определение содержания ванадия. Фотометрический метод с применением N-бензол-N-фенилгидроксиламина
Название (англ.):
Aluminium oxide primarily used for the production of aluminium; Determination of vanadium content; N-Benzoyl-N-phenylhydroxylamine photometric method
Описание (англ.):
The method is applicable to products having vanadium contents between 0,0003 % (m/m) and 0,016 % (m/m), provided that the content of chromic oxide and titanic oxide does not exceed 0,002 % (m/m) and 0,006 % (m/m), respectively. The principle consists in a previous oxidation of the vanadium contained in the test sample to vanadium(V) by patassium permanganate in sulphuric acid solution. Formation of the vanadium-N-benzoyl-N-phenylhydroxylamine complex. Extraction of the violet coloured complex with chloroform in hydrochloric acid; solution. Photometric measurement of the coloured complex at a wavelength of about 524 nm.
Дата регистрации:
01.11.76
Дата введения:
01.09.76
Код КГС:
А39
Код ОКСТУ:
1711;1709
Код ОКС(МКС):
71.100.10
Код ОКП:
1711;1709
Нормативные ссылки:
BS 4140 PART 12-1986, EQV*NBN T 03-412-1983, EQV*NF T20-209-1973, EQV
Ключевые слова:
ALUMINIUM ALUMINIUM OXIDE CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT PHOTOMETRY (CHEMICAL ANALYSIS) PRODUCTION SPECTROPHOTOMETRIC ANALYSIS SPECTROPHOTOMETRY VANADIUM CHEMICAL ANALYSIS AND TESTIN SPECTROCHEMICAL ANA