草酸银中银的还原重量法测定  

Determination of silver content in silver oxalate by reduction gravimetric method

作　　者：管有祥 李锟 刘莉 彭春生 王琳娜 曹鹏彬 殷耀锋 袁缘 GUAN You-xiang;LI Kun;LIU Li;PENG Chun-sheng;WANG Lin-na;CAO Peng-bin;YIN Yao-feng;YUAN Yuan(Yongxing Sino-Platinum Metals Resources Co.Ltd.,Chenzhou 423399,Hunan,China;State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co.Ltd.,Kunming 650106,China)

机构地区：[1]永兴贵研资源有限公司,湖南郴州423399 [2]贵研铂业股份有限公司稀贵金属综合利用新技术国家重点实验室,昆明650106

出　　处：《贵金属》2022年第S01期150-151,共2页Precious Metals

摘　　要：采用水合肼还原重量法测定草酸银中银含量,平行测定5次,测定的相对标准偏差小于0.04%,加标回收率99.96%~100.02%,干扰试验显示:0.1 mg的Zn^(2+)、Co^(2+)、Ni^(2+)、Cu^(2+)、Cd^(2+)不干扰银的测定。该法与其他方法相对比,样品取样量大,操作简单,可满足生产现场测定的要求。The silver content in silver oxalate is determined by the hydrazine hydrate reduction gravimetric method,whose determination is performed 5 times in parallel.The relative standard deviation of the determination is less than 0.04%,and the recovery rate of standard addition is 99.96%~100.02%.The interference test showed that 0.1 mg of Zn^(2+),Co^(2+),Ni^(2+),Cu^(2+),Cd^(2+)did not interfere with the determination of silver.Compared with other methods,this method has a large sample size and simple operation,which can meet the requirements of production site measurement.

关 键 词：重量法 水合肼还原 草酸银 银含量 

分 类 号：O655.1[理学—分析化学]