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矿石中铜、钴、镍、铅、锌、镉以二硫腙的氯仿溶液,pH～10的情况下萃取至有机相,再以0.3N 盐酸反萃,铅、镉、锌进入水相,铜、钴、镍仍留在有机相,分别用硫酸—硝酸除去有机物。水相在pH 2.5～3.5之间,1M 氯化钾底液连测铅、镉、锌;有机相在 pH2.0～3.0之间,0.2M 氯化钾底液中测定铜,再加入吡啶以0.2M 氯化钾—0.2M 吡啶为支持电解质测定镍和钴。方法可测矿石中铡铅镉锌0.00x%的含量。
The copper, cobalt, nickel, lead, zinc and cadmium in the ore are extracted with dithizone in chloroform solution at pH ~ 10 to the organic phase, then stripped with 0.3N hydrochloric acid, the lead, cadmium and zinc enter into the water phase, and the copper , Cobalt, nickel remain in the organic phase, respectively, with sulfuric acid - nitric acid to remove organic matter. The aqueous phase is between pH 2.5 and 3.5, with 1 M potassium chloride at the bottom for the detection of lead, cadmium and zinc. The organic phase is measured at pH 2.0-3.0, 0.2 M potassium chloride at the bottom, and then pyridine is added 0.2M potassium chloride - 0.2M pyridine support electrolyte for the determination of nickel and cobalt. Method can be measured ore 铡 lead cadmium and zinc 0.00x% content.