等离子体发射光谱法测定土壤和沉积物中6个常量元素结果不确定度评定  

Uncertainty Evaluation for the Determination Results of Major Elements in Soil and Sediment Samples by Inductively Coupled Plasma-Atomic Emission Spectrometry

作　　者：沙艳梅[1] 

机构地区：[1]河南省地质矿产勘查开发局第一地质勘查院检测中心,河南南阳473000

出　　处：《岩矿测试》2009年第5期474-478,共5页Rock and Mineral Analysis

摘　　要：采用等离子体发射光谱法对测定土壤和水系沉积物中铝、铁、钙、镁、钾、钠6个常量元素进行系统的不确定度评定。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,通过合成得到测量结果的合成不确定度、扩展不确定度及测试结果的报告形式。The measurement uncertainty for the analytical results of major elements including Al, Fe, Ca, Mg, K and Na in soil and stream sediment samples determined by inductively coupled plasma-atomic emission spectrometry （ICP-AES） was evaluated. The main sources of measurement uncertainty came from sub-uncertainties of the analytical balance, analytical glassware, calibration solutions, calibration curves, reagent volume and repetitive measurements. Each sub-uncertainty was calculated and the composed uncertainty and expanded uncertainty of the measurement results were obtained by combining the sub-uncertainties.

关 键 词：不确定度评定 等离子体发射光谱法 常量元素 土壤 沉积物 

分 类 号：O213.1[理学—概率论与数理统计] O657.31[理学—数学]