Руды железные. Определение содержания меди. Часть 1. Спектрофотометрический метод с применением 2,2'-бихинолина
Название (англ.):
Iron ores - Determination of copper content - Part 1: 2,2'-Biquinolyl spectrophotometric method
Описание (англ.):
The principle of the method specified is decomposition of the test portion by treatment with hydrochloric, nitric and perchloric acids, dehydration of silica, dilution and filtration, ignition of the residue, treatment with hydrofluoric and sulfuric acids, fusion with sodium carbonate,dissolution of the cooled melt in the filtrate, reduction of copper(II) to form the red-violet complex of copper(I), spectrophotometric measurement of the absorbance of the complex at approximately 545 nm. The method is applicable to copper contents between 0,004 % (m/m) and 0,8 % (m/m) in natural iron ores, iron ore concentrates and agglomerates, including sinter products.
Заменяет стандарты:
ISO 5418(1984.06)
Дата регистрации:
01.07.94
Дата введения:
01.05.94
Код КГС:
А39
Код ОКСТУ:
0710
Код ОКС(МКС):
73.060.10
Код ОКП:
0710
Нормативные ссылки:
BS ISO 5418-1(1995/BSI), EQV ISO 648-1977*ISO 1042-1983*ISO 3081-1986*ISO 3082-1987*ISO 3083-1986*ISO 3696-1987*ISO 7764-1985
Ключевые слова:
ANALYSIS COPPER COPPER CONTENT IRON ORES METHODS SPECTROPHOTOMETRY TESTING ANALYSIS