Prezentul standard stabile?te metodele de determinare a con?inutului de arsen din minereuri ?i concentrate de cupru, plumb, zinc, bismut, molibden, pirit? ?i sulfuri complexe ?i anume :
— metoda poten?iometric? pentru con?inuturi de arsen peste 0,05%, ?n
STAS 1269/8-1991 history
1991STAS 1269/8-1991 COPPER, LEAD, ZINC, BISMUTH, MOLYBDENUM, PYRITE AND COMPLEX SULPHURE ORES AND CONCENTRATES Arsenic content determination