| 蒸馏法测定食品中二氧化硫的不确定度分析 |
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| 引用本文： | 龙元香,谷冠军,杜菡,梁先长.蒸馏法测定食品中二氧化硫的不确定度分析[J].吉首大学学报(自然科学版),2011,32(6):93-96. |
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| 作者姓名： | 龙元香 谷冠军 杜菡 梁先长 |
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| 作者单位： | (湘西州疾病预防控制中心，湖南吉首 416000) |
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| 摘 要： | 采用蒸馏法测定食品中二氧化硫的含量，通过对测定过程中各不确定度分量的计算与分析，测得二氧化硫含量为0.203 7±0.004 8 g/L(95%置信概率).不确定度主要来源于标准溶液的定容和样品的重复测定.
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| 关 键 词： | 食品 二氧化硫 蒸馏法 不确定度 |
Uncertainty Evaluation of Sulfur Dioxide Determination in Food by Distillation Method |
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| LONG Yuan-xiang,GU Guan-jun,DU Han,LIANG Xian-chang.Uncertainty Evaluation of Sulfur Dioxide Determination in Food by Distillation Method[J].Journal of Jishou University(Natural Science Edition),2011,32(6):93-96. |
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| Authors: | LONG Yuan-xiang GU Guan-jun DU Han LIANG Xian-chang |
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| Institution: | (Center of Disease Control and Prevention of Xiangxi,Jishou 416000,Hunan China) |
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| Abstract: | During the determination of sulfur dioxide in food by distillation method,each parameter of uncertainty was calculated and analyzed,the content of sulfur dioxide was 0.203 7±0.004 8 g/L(95% confidence probability).The results showed that the uncertainty was mainly due to the metered volume of standard solution and the repeated sample determination. |
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| Keywords: | distillation method sulfur dioxide uncertainty |
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