痕量一氧化氮标准物质的研制

胡树国; 张体强; 杨柳青; 杜秋芳; 王德发

doi:10.3969/j.issn.1000-1158.2023.01.21

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计量学报 ›› 2023, Vol. 44 ›› Issue (1) : 144-148. DOI: 10.3969/j.issn.1000-1158.2023.01.21

电离辐射、标准物质与生物计量

痕量一氧化氮标准物质的研制

胡树国,张体强,杨柳青,杜秋芳,王德发

作者信息 +

Development of Gas Reference Material of Trace Nitrogen Monoxide

HU Shu-guo,ZHANG Ti-qiang,YANG Liu-qing,DU Qiu-fang,WANG De-fa

Author information +

文章历史 +

摘要

采用重量法研制了0.100μmol/mol的痕量氮中一氧化氮气体标准物质,其扩展不确定度为10%。在稀释气纯度分析时,采用标准添加法对纯化后的高纯氮中一氧化氮进行了准确定值,解决了痕量气体标准物质定值的难题。在长期稳定性考察时发现,气瓶中痕量一氧化氮量值随时间逐渐降低,1年内量值变化范围在4%~8%之间,并根据此结果进行了因素分析。

Abstract

Gas reference material of nitrogen monoxide in nitrogen at mole fractions of 0.100μmol/mol was developed by gravimetric method, the extended uncertainty was determined to be 10%. In the dilution gas purity analysis, the standard addition method was used to accurately determine the value of nitrogen monoxide in the purified high-purity nitrogen, which solved the problem of determining the value of trace gas reference materials. During the long-term stability inspection, it was found that the amount of trace nitric oxide in the gas cylinder decreased gradually with time, and the change range was 4%~8% within one year. Based on this result, factor analysis was conducted.

导出引用

胡树国,张体强,杨柳青,杜秋芳,王德发. 痕量一氧化氮标准物质的研制[J]. 计量学报. 2023, 44(1): 144-148 https://doi.org/10.3969/j.issn.1000-1158.2023.01.21

HU Shu-guo,ZHANG Ti-qiang,YANG Liu-qing,DU Qiu-fang,WANG De-fa. Development of Gas Reference Material of Trace Nitrogen Monoxide[J]. Acta Metrologica Sinica. 2023, 44(1): 144-148 https://doi.org/10.3969/j.issn.1000-1158.2023.01.21

中图分类号： TB99

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