水中氟离子溶液标准物质的研制
李锋丽1,孙倩芸1,王荣威2,隋峰1,邱黛君1,孙华1
1. 山东省计量科学研究院,济南 250014; 2. 威海市计量所,山东威海 264000
Preparation of fluorine solution reference material in water
李锋丽1,孙倩芸1,王荣威2,隋峰1,邱黛君1,孙华1
1. Shandong Institute of Metrology, Jinan 250014, China; 2. Weihai Institute of Metrology, Weihai 264000, China
摘要:介绍水中氟离子溶液标准物质的研制方法。以氟化钠标准物质为原料,超纯水为溶剂,采用重量-容量法制备氟溶液标准物质。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检验。利用离子色谱法对研制的标准物质与国家二级标准物质进行比对。方差分析和线性拟合结果表明,该溶液标准物质具有良好的均匀性和稳定性。研制的水中氟离子溶液标准物质的定值结果为1000 μg/mL,相对扩展不确定度Urel=1.0%(k=2)。该标准物质量值准确,且具有溯源性,可用于水中氟化物测量过程的质量控制及分析方法的确认和评价。
Abstract:It was introduced of the process to prepare reference material of fluorine solution. Reference material of
fluorine solution was prepared by the weight-volume method using sodium fluoride standard material as raw material and
ultrapure water as solvent. The checking of uniformity and stability test were systematically studied by F test and regression
curve method, respectively. Ion chromatography was used to compare the developed standard substance with national
secondary standard substance. The results of variance analysis and linear fitting showed that the standard material of the
solution has good uniformity and stability. The result showed that the certified value of the reference materials was 1 000
μg/mL with relative expanded uncertainty of 1.0%(k=2). The quantity value of the reference material was accuracy and
traceable. It can be used for quality control of fluoride measurement process in water and confirmation and evaluation of
analytical methods.
关键词:氟溶液标准物质;重量-容量法;标准物质定值;离子色谱法
Keywords:reference material of fluorine ion solution; weight-capacity method; value certification of standard
本文引用格式:
李锋丽,孙倩芸,王荣威,等. 水中氟离子溶液标准物质的研制[J]. 化学分析计量,2019,28(Z1):1-5.
LI F L,SUN Q Y,WANG R W,et al. Preparation of fluorine solution reference material in water[J]. Chemical analysis and meterage,2019,28(Z1):1-5.
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