| 气相色谱法检测空气中有机物挥发总量的不确定度评定 |
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| 引用本文： | 梅爱华,蓝学威. 气相色谱法检测空气中有机物挥发总量的不确定度评定[J]. 分析测试学报, 2010, 29(1). DOI: 10.3969/j.issn.1004-4957.2010.01.021 |
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| 作者姓名： | 梅爱华 蓝学威 |
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| 作者单位： | 广州建设工程质量安全检测中心,广东,广州,510440;广州增城正源建设工程质量安全检测中心,广东,广州,511300 |
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| 摘 要： | 对气相色谱法测定室内有机物挥发总量(TVOC)过程中可能引入的不确定度进行了分析和评定。通过实验数据计算得出室内空气中TVOC浓度的不确定度为:当取置信概率为95%,包含因子k=2,则其扩展不确定度Urel=13.73%。通过对不确定度的分析,指出在检测过程中质量控制的关键在于标准物质的浓度和气相色谱分析样品过程,该两项引入的不确定分量占总相对标准不确定度的93%,并提出了质量控制改进方法。
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| 关 键 词： | 有机物挥发总量 热解吸/气相色谱法 室内空气 不确定度 |
Evaluation of Uncertainty in the Measurement of Total Volatile Organic Compounds by GC Method |
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| MEI Ai-hua,LAN Xue-wei. Evaluation of Uncertainty in the Measurement of Total Volatile Organic Compounds by GC Method[J]. Journal of Instrumental Analysis, 2010, 29(1). DOI: 10.3969/j.issn.1004-4957.2010.01.021 |
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| Authors: | MEI Ai-hua LAN Xue-wei |
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| Affiliation: | MEI Ai-hua1,LAN Xue-wei2(1.Guangzhou Testing Center of Construction Quality , Safety,Guangzhou 510440,China,2.Guangzhou Zengcheng Zhengyuan Testing Center of Construction Quality , Safety,Guangzhou 511300,China) |
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| Abstract: | Uncertainties originated from the measurement of total volatile organic compounds(TVOC) content in the indoor air by gas chromatography(GC) were evaluated.The relative uncertainty(Urel) of the TVOC concentration was calculated to be 13.73% from the experimental data when the designed incredible probability was 95% and factor(k) was 2.From results of uncertainty analyses,it was concluded that the key issue for quality control of the testing was reference materials and the process of GC analysis,and their unc... |
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| Keywords: | total volatile organic compounds(TVOC) thermal desorption/gas chromatography indoor air uncertainty |
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