XRF熔融法测定重晶石中BaO和SiO_2含量的不确定度评定  

Evaluation of Uncertainty for Measurement of BaO and SiO_2 in Baryte by XRF Melting Method

作　　者：曾小平[1] 吴冰[1] 宋武元[2] 

机构地区：[1]华南理工大学分析测试中心,广州天河区五山路381号510640 [2]广东出入境检验检疫局,广州珠江新城花城大道66号510623

出　　处：《光谱实验室》2013年第6期3255-3259,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：广州地区2012年度分析测试基金专题项目(201203)

摘　　要：对X射线荧光光谱(XRF)熔融法测定重晶石中BaO和SiO2的不确定度产生原因进行了分析,并用实例对其不确定度结果进行了仔细的评定,给出了测量结果的扩展不确定度值,为建立有效的质量控制方法提供科学依据。计算结果显示,该方法准确度高,不确定度来源主要是标样偏差和曲线拟合偏差。The causes of uncertainty produced in measurement content of BaO and SiO2 in Baryte by XRF mehing method, and the uncertainty had been careful evaluated with an example, The expanded uncertainty of measurement result were given and provided scientific basis for setting up of effective quality control. The calculation results show that, the determination methods could achieve high accuracy, uncertainty mainly comes from deviation of standard reference materials and curve fitting.

关 键 词：X射线荧光 熔融法 不确定度 重晶石 

分 类 号：O657.34[理学—分析化学]