等离子光谱法测定岩石中微量元素的不确定度评定  

Uncertainty Evaluation for Determination of Trace Elements in Rock by Inductively Coupled Plasma Atomic Emission Spectrometry

作　　者：杨红晓[1] 张林群[1] 周爱东[2] 

机构地区：[1]南京师范大学分析测试中心,江苏南京210046 [2]南京大学化学化工学院,江苏南京210093

出　　处：《南京师大学报（自然科学版）》2011年第3期69-73,共5页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金面上预研资助项目(1116020501)

摘　　要：对电感耦合等离子体原子发射光谱(ICP-AES)法测定岩石中6个微量元素Cu、Zn、Pb、Mn、Ni、Cr的不确定度来源进行了详细分析.不确定度的来源主要包括分析过程中所用的天平、玻璃器皿、标准曲线、标准溶液、试液定容体积及测量重复性等引入的不确定度分量.计算出各分量的不确定度,最后合成标准不确定度、扩展不确定度,得出测试结果的报告形式.The sources for the uncertainty were analyzed in detail for the determination of trace elements including copper, zinc, plumbum, manganese, nickel, and chromium in rock by inductively coupled plasma atomic emission spectrometric method. The main sources of measurement uncertainty come from sub-uncertainties of the analytical balance, analytical glassware, calibration curves, calibration solutions, reagent volume and repetitive measurements. Each sub - uncertainty, combined uncertainty and expanded uncertainty of the measurement results were calculated, and the report form of testing result was obtained.

关 键 词：不确定度评定 等离子体发射光谱法 微量元素 岩石 

分 类 号：O657.31[理学—分析化学]