蒸馏法测定一次性筷子中二氧化硫浸出量的不确定度评定  

Uncertainty Evaluation of the Determination of Sulfur Dioxide Content in Disposable Chopsticks by Distillation

作　　者：陈旻实[1] 李小晶[1] 吕水源[1] 林柏玲[1] 郑思远[1] 

机构地区：[1]福建出入境检验检疫局技术中心国家消费品安全检测重点实验室福建省检验检疫技术研究重点实验室,福州350001

出　　处：《化学分析计量》2012年第5期12-15,共4页Chemical Analysis And Meterage

基　　金：福建省科技计划重点项目(No.2011Y0001);国家质量监督检验检疫总局科技计划项目(No.2011IK028);福建出入境检验检疫局科技计划项目(No.FK2010-22)

摘　　要：依照GB 19790.1-2005,GB 19790.2-2005和GB/T 5009.34-2003(第二法),选取含量接近法规限值的代表性样品,从基准物质和标准滴定溶液溯源,探索测定一次性筷子中二氧化硫浸出量的数学模型,对检测过程中引入的不确定度进行了分类和量化,系统地评定了各个不确定度分量,得到该方法的相对标准不确定度为0.0043。According to GB 19790.1-2005, GB 19790.2-2005 and GB/T 5009.34-2003 （ the second method ）, using a representative sample in which sulfur dioxide content was close to regulatory limit, the mathematical model for determination of sulfur dioxide content in disposable chopsticks was introduced by investigating from the standard material and the standard titration solution. The components of uncertainty in the detection process were classified and quantified, and were evaluated systematically. The uncertainty evaluation for determination of sulfur dioxide content in disposable chopsticks by distillation was established.

关 键 词：一次性筷子 二氧化硫 不确定度 

分 类 号：O657.7[理学—分析化学]