电解法测定粗铜中的铜含量  

Determination of copper content in crude copper by electrolysis method

作　　者：冯朝军 胡晓帅 曾静 张竹柳 FENG Zhao-jun;HU Xiao-shuai;ZENG Jing;ZHANG Zhu-liu(The First Geological Brigade of Hubei Geological Bureau,Huangshi 435100,China;Daye Non-Ferrous Design&Research Institute CO.,LTD,Huangshi 435005,China)

机构地区：[1]湖北省地质局第一地质大队,湖北黄石435100 [2]大冶有色设计研究院有限公司,湖北黄石435005

出　　处：《世界有色金属》2024年第11期10-12,共3页World Nonferrous Metals

摘　　要：本文探究电流电解重量法测定粗铜中铜含量,并用原子吸收光谱法对测定结果进行补正。分别考察了电解条件和共存杂质对分析结果的影响。结果表明,采用稀硝酸-稀硫酸溶解样品,沉淀分离银等杂质后,可以获得稳定可靠的测定结果。实验方法适用于常规粗铜样品中铜含量的测定,经大量生产实践证实,测定结果精密度良好,相对标准偏差RSD小于0.1%,经同类型标准物质验证,准确度相对误差RE小于0.05%,该方法具有干扰小、简便、精准、环保的突出特点,可推广应用于质检部门的日常检测分析和仲裁分析工作中。This article explores the determination of copper content in crude copper by current electrolysis gravimetric method,and corrects the measurement results using atomic absorption spectroscopy.The effects of electrolysis conditions and coexisting impurities on the analysis results were investigated separately.The results indicate that stable and reliable determination results can be obtained by dissolving the sample with dilute nitric acid and dilute sulfuric acid,precipitating and separating impurities such as silver.The experimental method is suitable for the determination of copper content in conventional crude copper samples.It has been proven through extensive production practice that the precision of the measurement results is good,with a relative standard deviation(RSD)of less than 0.1%.After verification with the same type of standard substance,the relative error of accuracy(RE)is less than 0.05%.This method has outstanding characteristics of small interference,simplicity,accuracy,and environmental protection,and can be widely applied in the daily detection and arbitration analysis work of quality inspection departments.

关 键 词：电解法 粗铜 铜 

分 类 号：TG115.33[金属学及工艺—物理冶金]