Натр едкий технический. Определение содержания железа. Фотометрический метод с применением 1,10-фенантролина
Название (англ.):
Sodium hydroxide for industrial use; Determination of iron content; 1,10- Phenanthroline photometric method
Описание (англ.):
Specifies a method that is more sensitive and more widely used than the 2,2'-bipyridyl method. It is applicable to products having iron contents equal to or greater than 0.5 mg/kg. The principle is based on the reduction of trivalent iron by hydroxylammonium chloride, formation of a bivalent iron/1,10-phenanthroline complex in a buffered system. Photometricmeasurement of the coloured complex at a wavelength of about 510 nm. This method has also been approved by the IUPAC. - Cancels and replaces ISO Recommendation R 983-1969.
Дата введения:
01.12.74
Код КГС:
Л19
Код ОКСТУ:
2132;2109
Код ОКС(МКС):
71.060.40
Код ОКП:
2132;2109
Нормативные ссылки:
BS 6075 PART 3-1981, EQV*ELOT 417-1980, EQV*NBN T 03-125-1980, EQV*NF T20-423-1976, EQV*NP-1080-1975, EQV*NS 9046-1981, NEQ*SFS-ISO 983-1984, EQV
Ключевые слова:
CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CHEMICALS DETERMINATION OF CONTENT IRON SODIUM HYDROXIDE SPECTROPHOTOMETRIC ANALYSIS SPECTROPHOTOMETRY CHEMICAL ANALYSIS AND TESTIN