| 车用乙醇汽油中乙醇含量测量不确定度的评定 |
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| 引用本文： | 王文佳,李东刚,吴凡,韩建星.车用乙醇汽油中乙醇含量测量不确定度的评定[J].化学工程师,2010,24(2):59-62. |
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| 作者姓名： | 王文佳 李东刚 吴凡 韩建星 |
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| 作者单位： | 黑龙江省质量监督检测研究院,黑龙江,哈尔滨,150050 |
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| 摘 要： | 根据SH/T0663-1998,采用气相色谱法对车用乙醇汽油中的乙醇含量进行分析。通过乙醇测量不确定度的数学模型,分析了不确定度的来源,从内标纯度、称量过程、峰面积测量、线性拟合、方法重复性5个方面对测量不确定度进行了评定,指出线性拟合是对结果不确定度贡献最大的影响因素。论文同时也比较了内标法和外标法在乙醇含量不确定度评定中的差异,外标法的不确定度较大,主要来源有方法重复性和峰面积测量。
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| 关 键 词： | 气相色谱法 内标法 测量不确定度 车用乙醇汽油 乙醇 |
Analysis of uncertainty for the determination of ethanol in vehicle alcohol gasoline by gas chromatography |
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| WANG Wen-jia,LI Dong-gang,WU Fan,HAN Jian-xing.Analysis of uncertainty for the determination of ethanol in vehicle alcohol gasoline by gas chromatography[J].Chemical Engineer,2010,24(2):59-62. |
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| Authors: | WANG Wen-jia LI Dong-gang WU Fan HAN Jian-xing |
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| Affiliation: | The Academy of Quality Inspection and Research in Heilongjiang Province;Harbin 150050;China |
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| Abstract: | The uncertainty for the determination of ethanol in vehicle alcohol gasoline by gas chromatography was analyzed.The sources of the uncertainty which resulted from purity of internal solution,the weight of the sample,linear fitting,peak areas and method were studied according to mathematical model.At last the combined standard uncertainty and the expanded uncertainty were reported.Through evaluation it was indicated that the factor mostly affecting the uncertainty for the determination of ethanol was the unc... |
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| Keywords: | GC internal standard method uncertainty vehicle alcohol gasoline ethanol |
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