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铜锌矿原矿、尾矿中铜和锌的测定,目前多采用氨性底液极谱法,此法有快、简、准的优点,但因用汞而不便。为此,试验了二甲酚橙[X.O.]连续比色法,在pH5.8乙酸盐介质中,X.O.与铜、锌显色,测其总量,然后用抗坏血酸-硫脲使Cu-X.O.褪色,测Zn-X.O.的吸光度,铜量由差减法求得,方法适于测定镍、钴、镉含量极微的铜锌矿原矿、浮选尾矿中n×10~(-2)%～2%的铜和锌。试剂
The determination of copper and zinc in the raw ore and tailings of copper and zinc mine, the current use of ammonia bottom polarography, the method of fast, Jane, prospective advantages, but inconvenience due to the use of mercury. To this end, the Xylenol orange [XO] colorimetric method was tested. In the pH5.8 acetate medium, XO was colored with copper and zinc, and the total amount was measured. Then the Cu-XO Fading and measuring the absorbance of Zn-XO. The amount of copper was determined by the subtractive method. The method is suitable for the determination of copper, zinc and copper in flotation tailings with n × 10 ~ (-2)% ~ 2% copper and zinc. Reagents