中文摘要：

为解决铜电解液中砷锑铋之间复杂化学反应所引起的砷锑分析误差大的问题,在含砷锑矿石的砷锑连续滴定方法基础上,模拟了铜电解液中砷锑的存在环境,开发出适合于铜电解液砷锑测定的双氧水预处理-连续滴定法。首先采用适量双氧水消除As？,Sb？对砷锑分析结果的影响,再依次加入硫酸和硫酸肼两次冒浓烟至瓶颈,冷却后于盐酸介质中,以次甲基兰-甲基橙为指示剂,先用硫酸铈标准溶液滴定Sb？,再用溴酸钾标准溶液滴定As？。实验表明,连续滴定法中,适宜的硫酸加入量为20mL,发烟时间为5min,滴定锑时的盐酸浓度为4.3mol/L,温度为70℃,滴定砷时的盐酸浓度为1.8mol/L,温度为80℃。采用本方法分析合成铜电解液,砷、锑的回收率分别为96%和104%。采用该方法分析铜电解生产线上铜电解液,测得结果与原子吸收光谱法吻合,相对标准偏差（n=6）小于1.2%。

英文摘要：

In order to reduce analytical error resulted from the complicated chemical reaction among ar- senic, antimony and bismuth in＇copper electrolyte, the envirmament of arsenic and antimony in copper electrolyte was simulated based on the continuous titration met：hod of arsenic and antimony in arsenic- antimony ore,and a method for determination of arsenic and antimony in copper electrolyte was devel- oped by hydrogen peroxide p＇retreatment-continuous titration method. Firstly, the influences of As（Ⅲ） and Sb（Ⅲ） on analysis result＇of arsenic and antimony were eliminated by addtion of hydrogen peroxide. Then, sulfuric acid and hydrazine sulfate were added separately until the smoke emit to,the bottle neck. After cooling down, Sb（Ⅲ） was titrated by ceric sulfate and As（Ⅲ） was titrated by potassium bro- mate in hydrochloric acid medium with methylene blue-methyl orange as indicator. The results showed that the optimal conditions in continuous titration were as follows： sulfuric acid dosage was 20 mL; smoking time was 5 min; the concentration of hydrochloric acid were 4.3 mol/L and temperature was 70 ℃ for determination oLantimony; the concentration of hydrochloric acid were 1.8 mol/L and tem- perature was 80 ℃ for determination of arsenic. The proposed method was applied to the determina- tion of synthetic copper electrolyte. The recoveries for arsenic and antimony were 96% and 104%, re- spectively. Moreover, this method was also used to the determination of copper electrolyte on Copper electrolysis production line. The results were consistent with those obtained by atomic absorption spectrometry, and the relative standard deviation （n=6） was less than 1.2%.