原子吸收光谱法测定卤水中铷的不确定度评定  

Uncertainty Evaluation of Determination of Rubidium in Brine by Flame Atomic Absorption Spectroscopy

作　　者：黄跟平[1,2] 高丹丹[1,2] 李青海[1,2] 董亚萍[1] 李武[1] 李亚红[1] 

机构地区：[1]中国科学院青海盐湖研究所,青海西宁810008 [2]中国科学院研究生院,北京100039

出　　处：《盐湖研究》2011年第3期43-47,共5页Journal of Salt Lake Research

基　　金：国家"十一五"科技支撑计划(2006BAB09B07);国家自然科学基金项目(41073023)联合资助

摘　　要：通过对电离缓冲原子吸收光谱法测定卤水中铷含量的过程进行分析,建立了该法的不确定度评价数学模型,系统分析并计算了各不确定度分量、合并不确定度和扩展不确定度。测定结果显示,卤水样品中铷含量为170±3.2 mg.L-1,由待测溶液浓度引入的不确定度为影响测定结果的最主要因素。The uncertainty for determination of rubidium in brine by FAAS was evaluated. The mathematical model was established and sources of standard uncertainty were analyzed in detail. The combined standard uncertainty and expanded uncertainty were calculated by selecting suitable evaluation methods. The concentration of rubidium in brine was （170 ± 3.2） mg· L^-1, and the most primary influential factor for the measurement was the uncertainty produced by the concentration of brine samples.

关 键 词：卤水 不确定度 原子吸收光谱法 

分 类 号：O657.31[理学—分析化学]