奶粉检测用混合溶液标准物质  

Certified reference material of mixed solution for determination of milk powder

作　　者：应劼[1] 焦晨佳 高艳秋[1] Ying Jie;Jiao chenjia;Gao Yanqiu(Shanghai Institute of Measurement and Testing Technology;PerkinElmer Management(Shanghai) Co.,Ltd)

机构地区：[1]上海市计量测试技术研究院 [2]珀金埃尔默企业管理(上海)有限公司

出　　处：《上海计量测试》2017年第2期2-4,12,共4页Shanghai Measurement and Testing

基　　金：国家质检总局科技计划项目(2015QK040)

摘　　要：依据GB 5413.21-2010研制了以水质为基体、含有九种元素的奶粉检测用混合溶液标准物质。用方差分析法检验标准物质的均匀性;以美国NIST标样和中国计量科学研究院(NIM)的一级标准物质作为标准,采用等离子发射光谱法对标准物质中九种元素的含量进行直接比对定值,经统计方法给出九种元素含量的标准值和不确定度。一年的稳定性监测结果表明,该标准物质具有良好的稳定性。According to GB5413.21-2010,a kind of certified reference material of mixed solution based on water matrix which contains nine elements and is used for determination of milk powder is developed.The homogeneity of the reference material is examined by the method of variance analysis.Taking the NIST standard materials and primary standards from National Institute of Metrology(NIM)as the reference,the contents of nine elements in the reference material are determined by ICP-OES,and the standard value and their uncertainties of the contents of nine elements in standard material are obtained by statistic methods.One year's stability monitoring results show that the long term stability of the standard material is qualified.

关 键 词：奶粉 检测 标准物质 标准值 不确定度 

分 类 号：TQ421.31[化学工程] TS252.7[轻工技术与工程—农产品加工及贮藏工程]