| 汽油二烯值的测量不确定度评定 |
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| 引用本文： | 韩樱,宋昌盛,王宸,唐亚丹.汽油二烯值的测量不确定度评定[J].广州化工,2013(21):105-107. |
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| 作者姓名： | 韩樱 宋昌盛 王宸 唐亚丹 |
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| 作者单位： | 太仓出入境检验检疫局,江苏太仓215400 |
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| 摘 要： | 根据国家计量技术规范JJF1135-2005《化学分析测量不确定度评定》,评定了电位滴定法测定汽油中二烯值含量的不确定度。其来源主要包括称量的不确定度、标准溶液的不确定度及测量重复性引入的不确定度等,将各不确定度分量合成后,得到汽油二烯值的不确定度为:当二烯值含量为0.35 gI2/100 g时,扩展不确定度为0.03 gI2/100 g,结果表达式为(0.35±0.03)gI2/100 g(k=2)。
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| 关 键 词： | 电位滴定 二烯值 不确定度 |
Uncertainty Evaluation of Diene Value Determination in Gasoline |
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| Affiliation: | HAN Ying, SONG Chang - sheng, WANG Chen, TANG Ya - dan (Taicang Entry- Exit Inspection and Quarantine Bureau, Jiangsu Taicang 215400, China) |
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| Abstract: | According to the requirements of National Measurement Technical Specification JJF1135 -2005, the uncertainty of diene value in gasoline was measured by automatic potentionmetric titration. The main sources of uncertainty, including the uncertainty of w component of uncertainty. The diene value eighing, standard solution and measuring repeatability, were calculated for each of gasoline was 0. 35 gI2 /100 g, the expanded uncertainty was 0. 03 gI/100 g, and the expression of uncertainty was （0. 35±0. 03） gI2/100 g（k =2）. |
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| Keywords: | potentiometric titration diene value uncertainty |
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