电位滴定法测定石油产品中硫醇硫含量的测量不确定度评估  

Evaluation of Uncertainty in Determination of S-Mercaptan Content in Petroleum Products by Potentiometric Titration

作　　者：兰淑惠 梁德荣 杨波 石海信[1] 

机构地区：[1]广西高校北部湾石油天然气资源有效利用重点实验室(钦州学院),广西钦州535000

出　　处：《广东化工》2017年第18期31-32,共2页Guangdong Chemical Industry

基　　金：广西高校北部湾石油天然气资源有效利用重点实验室开放课题基金资助

摘　　要：利用电位滴定法测定石油产品中硫醇硫的含量,分析了不确定度来源,建立了电位滴定法测定硫醇硫含量的数学模型。对其中的标准滴定溶液配制、测量重复性、样品准备等各个不确定度分量进行评估。计算得出本实验测定结果的扩展不确定度为0.62 mg/kg。S-Mercaptan content in petroleum products was measured by potentiometric titration. By analyzing the source of uncertainty, a calculation formula for the uncertainty in assay with potentiometric titration was established. Each variable parameter included standard titration solution preparation, repetition measurement and sample treatment process etc among the procedure was analyzed. Results showed that uncertainty in the test was 0.62 mg/kg.

关 键 词：不确定度 电位滴定法 石油产品 硫醇硫 

分 类 号：O65[理学—分析化学]