电解质分析仪用系列混合溶液标准物质的研制  

Preparation of a Series of Mixed Solution Reference Materials for Electrolyte Analyzers

作　　者：张鹏辉 罗婷婷 司升玲 张蒙 张惠 刘季业 杨嘉伟[2] ZHANG Peng-hui;LUO Ting-ting;SI Sheng-ling;ZHANG Meng;ZHANG Hui;LIU Ji-ye;YANG Jia-wei(Sichuan Zhongce RM Co.,Ltd.,Chengdu 610052,China;National Institute of Measurement and Testing Technology,Chengdu 610021,China)

机构地区：[1]四川中测标物科技有限公司,四川成都610052 [2]中国测试技术研究院,四川成都610021

出　　处：《化学试剂》2023年第8期127-135,共9页Chemical Reagents

摘　　要：以国家一级纯度标准物质氯化钾、氯化钠和纯度经准确定值的高纯试剂无水醋酸钠、氯化锂、氯化钙为原料研制电解质分析仪用系列混合溶液标准物质。采用重量-容量法制备了该系列混合溶液标准物质,以配制值为标准值,钾、钠、氯、锂、钙5种离子的混合溶液为该系列混合溶液标准物质。采用电解质分析仪对研制的系列混合溶液标准物质进行了均匀性检验和稳定性考察,其结果表明该系列混合溶液标准物质具有良好的均匀性和稳定性,有效期为12个月,详细分析了该系列混合溶液标准物质的不确定度来源,其相对扩展不确定度为2%(k=2)。该系列混合溶液标准物质可用于电解质分析仪的检定校准、分析方法确认与质量控制。The solution reference materials for electrolyte ananlyzers were prepared with the national primary standard materials potassium chloride,sodium chloride and high-purity reagents anhydrous sodium acetate,lithium chloride and calcium chloride which purity were certified.The series of solution reference materials for the verification of electrolyte ananlyzers were prepared by the weight-volume method with the formulating concentration as certified value,and the standard substance of the solution were mixed solution of potassium sodium,chloride,lithium and calcium ions.The homogeneity and stability of series standard solution were tested by electrolyte analyzers,the results were considered to be good.The uncertainty of solution reference material used in the verification of the series of electrolyte ananlyzers were evaluated,and the relative expanded uncertainty was 2%(k=2)in 12 months.This series of reference materials can be used for verification and calibration of electrolyte ananlyzers,the confirmation of analytical methods and quality control.

关 键 词：电解质分析仪 不确定度 检定 校准 标准物质 

分 类 号：O65[理学—分析化学]