journal6 ›› 2011, Vol. 32 ›› Issue (6): 93-96.

• 化学化工 • 上一篇    下一篇

蒸馏法测定食品中二氧化硫的不确定度分析

  

  1. (湘西州疾病预防控制中心,湖南吉首 416000)
  • 出版日期:2011-11-25 发布日期:2012-03-22
  • 作者简介:龙元香(1971-),女,湖南吉首人,主管检验师,主要从事食品营养分析研究.

Uncertainty Evaluation of Sulfur Dioxide Determination in Food by Distillation Method

  1. (Center of Disease Control and Prevention of Xiangxi,Jishou 416000,Hunan China)
  • Online:2011-11-25 Published:2012-03-22

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.

关键词: 食品, 二氧化硫, 蒸馏法, 不确定度

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.

Key words: distillation method, sulfur dioxide, uncertainty

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