Натр едкий технический. Определение содержания ртути. Спектрометрический метод атомной абсорбции без пламени
Название (англ.):
Sodium hydroxide for industrial use; Determination of mercury content; Flameless atomic absorption spectrometric method
Описание (англ.):
Covers a method applicable to liquid or solid products having mercury contents greater than 0,02 mg/kg. The principle of determination is based on oxidation of the mercury contained in a test portion to mercury(II) ions by potassium permanganate in the presence of sulphuric acid, reduction of the excess oxidant by hydroxylammoniumchloride, reduction of the mercury(II) ions to mercury by tin(II) chloride, entrainment of the mercury in air or nitrogen, passage of the gaseous mixture through a measuring cell, and measurement of the absorption at a wavelength of 253,7 nm.
Дата регистрации:
01.09.79
Дата введения:
01.09.79
Код КГС:
Л19
Код ОКСТУ:
2133;2109
Код ОКС(МКС):
71.060.40
Код ОКП:
2133;2109
Нормативные ссылки:
BS 6075 PART 11-1981, EQV*NBN T 03-135-1980, EQV*NF T20-435-1980, EQV*NS 9056-1981, NEQ*SFS-ISO 5993-1984, EQV*UNE 55-614-84-1984, EQV
Ключевые слова:
ATOMIC ABSORPTION SPECTROMETRY ATOMIC ABSORPTION SPECTROPHOTOMETRY CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT MERCURY SODIUM HYDROXIDE SPECTROPHOTOMETRIC ANALYSIS SPECTROPHOTOMETRY ATOMIC ABSO CHEMICAL ANALYSIS AND TESTIN