摘要
现行标准中未涉及碲化铜的化学分析方法,研究建立一种碘量法测定碲化铜中铜量的分析方法。通过条件实验对溶样方法、碘化钾用量、冰乙酸用量、硫氰酸钾溶液用量等影响因素进行优化。该方法测定结果的相对标准偏差小于0.25%,加入标准物质回收率为98.07%~102.92%,准确度和精密度满足分析测定要求。
Since existing standards don＇t include methods for chemical analysis of copper telluride,an iodometric titration approach was established for determination of copper content in copper content telluride.The influence factors of sample dissolution method,potassium iodide dosage,glacial acetic acid,potassium thiocyanate are optimized by condition test.The RSD of the determination results is 0.25 %,the recovery rate of reference materials is 98.07 %-102.92 % and accuracy and precision meet the requirement of analysis and determination.
作者
潘颖
余高涛
吕茜茜
Pan Ying;Yu Gaotao;Lu Qianqian(Tongling Nonferrous Metals Group Holding Co.,Ltd;Tongling Nonferrous Metals Group Co.,Ltd.)
出处
《黄金》
CAS
2018年第8期88-90,共3页
Gold
关键词
碘量法
碲化铜
铜
溶样方法
干扰元素
iodometry
copper telluride
copper
sample dissolution method
interference element
