检定介质制备与静力称重法容量测量不确定度研究

doi:10.3969/j.issn.1000-1158.2013.06.06

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摘要采用微滤反渗透电去离子法制备超纯水代替自来水做为容量计量的检定介质。测量水的氢氧同位素丰度、温度梯度和大气环境参数，进行纯水密度计算的同位素丰度、压缩修正及溶解空气修正。水样检测结果表明，所制水符合GB/T 11446.1 EW-I水标准。水密度测量的标准不确定度减小到7×10^-3kg/m3，容量基准的容量测量不确定度Urel小于3×10^-5（k=3）。

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	郭立功
	刘子勇
	王金涛
	佟林
	暴雪松

关键词 ：计量学, 容量基准, 超纯水, 制备, 密度测量

Abstract：To propose that highpurity water which producted by microfilter,recerse osmosis and electrodeionzation technology is used as calibration medium and as a substitute for tapwaterTo correcte the density of water for factors as the water isotopic abundance，teperature gradient and dissolved air，the isotopic abundance，teperature gradient and atmosphere environmental parameters (t,p,RH) are measuredThe water quality report shows that the water be producted is in accord with the GB/T 11446.1 EW-I standardThe standard measurement uncertainty of water density is reduced to 7×10^-3kg/m3,and the measurement uncertainty of the volume primary standard Urel is less than 3×10^-5（k=3）.

Key words： Metrology Primary standard for volume Highpurity water Production Density measurement

基金资助:国家质量监督检验检疫总局技术改造项目（22-AJG1005）; 中国计量科学研究院自筹基本业务费项目（22-JB1219）

作者简介: 郭立功（1971-）,男,山东聊城人,中国计量科学研究院副研究员,主要从事容量、密度、液位计量研究。guolg@nim.ac.cn

引用本文:

郭立功,刘子勇,王金涛,佟林,暴雪松. 检定介质制备与静力称重法容量测量不确定度研究[J]. 计量学报, 2013, 34(6): 537-540.
GUO Li-gong,LIU Zi-yong,WANG Jin-tao,Tong Lin,Bao Xu-song. Study on Uncertainty of Volume Measerment by Hydrostatic Weighing Method and Production of Calibration Medium. Acta Metrologica Sinica, 2013, 34(6): 537-540.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2013.06.06 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2013/V34/I6/537