ICP-MS法测土壤样品中铜铅的不确定度评定  

Uncertainty Evaluation of Determination of Copper and Lead in Soil by Using ICP-MS

作　　者：刘红艳[1] 周燕[1] 王铁夫[1] 李予晋[1] 

机构地区：[1]吉林大学测试科学实验中心,吉林长春130026

出　　处：《光谱学与光谱分析》2011年第4期1115-1118,共4页Spectroscopy and Spectral Analysis

基　　金：国家重大项目-深部探测技术与实验研究专项项目(SinoProbe-04-05)资助

摘　　要：采用电感耦合等离子体质谱法(ICP-MS)对土壤样品中的铜和铅进行测定,分析了影响测量不确定度的主要来源,对样品溶解过程中的样品称量、消解、定容体积、测定过程的标准溶液的配制、曲线拟合、仪器测量重复性等影响不确定度的分量进行分析,按JJF1059—1999《测量不确定度评定与表示》的规定进行合成,最终给出扩展不确定度。这样结果的表达更加客观和真实。Copper and lead in soil samples were measured by using inductively coupled plasma mass spectrometry（ICP-MS）,and the impacts of major source of measurement uncertainty were discussed.Uncertainty components such as sample weighing in the process of digestion,the volume size,preparation of standard solutions,curve fitting,measurement repeatability were analyzed and synthesized according to JJF1059—1999（Evaluation and Expression of Uncertainty in Measurement）,and the final expanded uncertainty was given.Such expression of result was more objective and true.

关 键 词：ICP-MS 不确定度 土壤 铜 铅 

分 类 号：O657.6[理学—分析化学]