离子选择性电极法测定四氧化三钴中微量氯离子  

Determination of trace chloride ion in cobalt trioxide by ion selective electrode method

作　　者：朱国忠 徐艳燕 喻生洁 马群 庞燕 闫克玉 何云祥 Zhu Guozhong;Xu Yanyan;Yu Shengjie;Ma Qun;Pang Yan;Yan Keyu;He Yunxiang(National Nickel and Cobalt Advanced Materials Engineering Research Center,Jinchang 737100,China;Gansu Jingpu Testing Technology Co.,Ltd.,Lanzhou 731010,China;Assay Testing Center of Jinchuan Group Co.,Ltd.,Jinchang 737100,China)

机构地区：[1]国家镍钴新材料工程技术研究中心,金昌737100 [2]甘肃精普检测科技有限公司,兰州731010 [3]金川集团检测中心,金昌737100

出　　处：《分析仪器》2020年第5期79-83,共5页Analytical Instrumentation

摘　　要：试验采用水加热浸取四氧化三钴中的氯离子,在离子强度调节剂硝酸钠存在下,用氯离子选择电极测定四氧化三钴中水溶性氯离子含量,试验结果表明,样品加标回收率在95.5~112%之间,相对标准偏差:≤4.5%,满足0.01%~1.0%范围内氯离子的测定。此法准确度高,操作快速、简便。The content of water-soluble chloride ion in cobalt troxide was determined by ion selective electrode method with ionic strength modifier sodium nitrate.The test results show that the recoveries of the spiked samples are in the range of 95.5%-112%,the relative standard deviations are less than or equal to 4.5%,which meet the requirement of chloride ions determination in the range of 0.01%-1.0%.The method is accurate,fast and simple.

关 键 词：四氧化三钴 氯离子 离子选择性电极法 水浸 

分 类 号：TM912[电气工程—电力电子与电力传动] O657.1[理学—分析化学] TQ138.12[理学—化学]