| 钡-硫酸钡重量基准方法研究 |
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| 引用本文： | 李云巧,田光慧,史乃捷,卢晓华,王道.钡-硫酸钡重量基准方法研究[J].现代计量测试,2006(3). |
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| 作者姓名： | 李云巧 田光慧 史乃捷 卢晓华 王道 |
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| 作者单位： | 国家标准物质研究中心，国家标准物质研究中心，国家标准物质研究中心，国家标准物质研究中心，北京工业大学 北京100013，北京工业大学，北京100022，北京100013，北京100013，北京100013，北京100022 |
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| 摘 要： | 为将钡-硫酸钡重量法发展成为可行的基准方法,选定浓度为20mg/g的钡溶液为研究对象,采用重量法与仪器分析相结合,测定溶液中钡含量和各不确定度影响因素的量值,并对测定结果进行了讨论。结果表明重量法与仪器分析相结合,明显改善了测量重复性,提高了测量不确定度,得到扩展不确定度为0.08%(k=2)。
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| 关 键 词： | 基准方法 重量法 钡 溯源性 不确定度 |
Study of Barium-barium Sulfate Gravimetric Primary Method |
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| LI Yunqiao,Tian Guanghui,Shi Naijie,Lu Xiaohua,Wang Dao.Study of Barium-barium Sulfate Gravimetric Primary Method[J].Modern Measurement and Test,2006(3). |
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| Authors: | LI Yunqiao Tian Guanghui Shi Naijie Lu Xiaohua Wang Dao |
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| Affiliation: | 1.National Research Center for Certified Reference Materials 2.Beijing University of Technology |
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| Abstract: | In order to develop the barium-barium sulfate(Ba2 -BaSO4) gravimetric method to a practical primary method,The barium solution,which concentration is 20mg/g,was selected as the researching solution. The barium concentration and the value of the factors of uncertainty were determined by gravimetric method coupled with instrumental analysis.The result was discussed and it has shown the repeatability and uncertainty of gravimetric method coupled with instrumental analysis was improved significantly compare to gravimetric method alone.The expanded uncertainty is 0.08 %(k=2). |
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| Keywords: | primary method gravimetric barium traceability uncertainty |
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