镉溶液标准物质的研制  

Preparation of Reference Materials of Cadmium Ion Solution

作　　者：孙倩芸 孙华 郭波 李锋丽 吕邓义 张喆 Sun Qianyun;Sun Hua;Guo Bo;Li Fengli;Lv Dengyi;Zhang Zhe(Shandong Institute of Metrology, Jinan　250014, China;Agency Service Center of Shandong Bureau of Quality Technical Supervision, Jinan　250000, China)

机构地区：[1]山东省计量科学研究院,济南250014 [2]山东省质量技术监督局机关服务中心,济南250000

出　　处：《化学分析计量》2017年第5期4-7,共4页Chemical Analysis And Meterage

基　　金：山东省重点研发计划项目(2016GSF120005)

摘　　要：介绍镉溶液标准物质的研制过程。以高纯镉为原料,1%硝酸溶液为基体,利用重量–容量和一步稀释法制备镉溶液标准物质。分别采用F检验和回归曲线法对研制的标准物质进行均匀性和稳定性考察。采用电感耦合等离子体发射光谱法与国家一级标准物质比对定值,并对镉溶液浓度量值进行不确定度评定。利用原子吸收分光光度法和电感耦合等离子体发射光谱法对研制的标准物质与国家二级标准物质进行比对。结果表明,研制的镉溶液标准物质的定值结果为100μg/m L,相对扩展不确定度U_(rel)=1.0%(k=2)。该标准物质量值准确且具有溯源性。It was introduced of the process to prepare reference material of cadmium ion solution.Reference material of cadmium ion solution was developed by weight-capacity and dilution method with the metal cadmium and1%HNO3solution as raw materials.The checking of uniformity and stability test were systematically studied by F test and regression curve method,respectively.Certified value of RM researched was defined by comparing with national primary reference material while the uncertainty was evaluated.The intercomparison between the CRM and RM researched was done by AAS and ICP-OES.The result showed that the certified value of the reference materials was100μg/mL with relative expanded uncertainty of1.0%(k=2).The quantity value of the reference material was accuracy and traceable.

关 键 词：镉溶液标准物质 重量–容量法 标准物质定值 电感耦合等离子体发射光谱法 

分 类 号：O657.3[理学—分析化学]