Acid-grade and ceramic-grade fluorspar; determination of sulfide content; iodometric method
Описание (англ.):
Digestion of a test portion in a sealed apparatus in a reaction mixture with hydrochloric acid, absorption of the liberated hydrogen sulfide in zinc acetate solution and iodometric determination of the zinc sulfide formed. Applicable to products with S-contents greater than 0,001 %.
Заменён стандартами:
ISO 4284(1993.01)
Заменяет стандарты:
ISO 4284(1978)
Дата введения:
01.12.88
Дата отмены:
01.01.93
Нормативные ссылки:
ISO 4282-1977*ISO 565-1983
Ключевые слова:
CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING DETERMINATION OF CONTENT FLUORSPAR IODOMETRY MINERALS MINERALS AND ORES ORES SULPHIDES CHEMICAL ANALYSIS AND TESTIN