离子色谱仪检定用标准物质研制  

Development of reference materials for ion chromatograph verification

作　　者：何春泽 程环 卢俊平 HE Chunze;CHENG Huan;LU Junping(Facilities and Support Center,Academy of Military MedicalSciences,Beijing 100850,China)

机构地区：[1]军事医学研究院科研保障中心,北京100850

出　　处：《化学分析计量》2022年第3期5-8,共4页Chemical Analysis And Meterage

摘　　要：介绍离子色谱仪检定用4种成分分析标准物质的制备方法。以高纯氯化钠、碘化钾、亚硝酸钠、碳酸锂为原料,采用重量-容量法分别制备水中氯离子、水中碘离子、水中亚硝酸根离子、水中锂离子4种成分分析标准物质,分别采用F检验法和直线拟合法对标准物质进行均匀性和稳定性检验,并对标准物质的定值不确定度进行了评定。研制的4种标准物质具有较好的均匀性和稳定性,水中氯离子的定值结果为1000μg/mL(U=1%,k=2),水中碘离子、水中亚硝酸盐离子和水中锂离子的定值结果均为200μg/mL(U=1%,k=2)。该系列标准物质满足离子色谱仪检定规程的要求。The preparation methods of four reference materials for component analysis for the verification of ion chromatograph were introduced.High purity sodium chloride,potassium iodide,sodium nitrite and lithium carbonate were used as raw materials,four reference materials for component analysis of chloride ion,iodine ion,nitrite ion and lithium ion in water were prepared by weight-capacity method.The uniformity and stability of the reference materials were tested by F test method and linear fitting method respectively,and the uncertainty of reference materials was evaluated.The four reference materials developed had good uniformity and stability.The fixed value results of chloride ion in water was 1000μg/mL(U=1%,k=2),the fixed value results of of iodine ion,nitrite ion and lithium ion in water were all 200μg/mL(U=1%,k=2).The series of reference materials meet the requirements of the verification regulation of ion chromatograph.

关 键 词：离子色谱仪 标准物质 氯离子 碘离子 亚硝酸根离子 锂离子 

分 类 号：O657.7[理学—分析化学]