盐岩样品中钙的分析不确定度评定  

Evaluation of Uncertainty for Measuring Calcium in Rock Salt

作　　者：周斌 祝云军 李海明[2] 

机构地区：[1]青海省地矿局集团格尔木盐湖资源开发有限公司 [2]青海省柴达木综合地质勘查大队实验室

出　　处：《光谱实验室》2010年第2期624-629,共6页Chinese Journal of Spectroscopy Laboratory

摘　　要：对EDTA容量法测定盐岩样品中Ca2+含量的分析过程,详细地分析了引入的不确定度来源:分析结果的不确定度由标准溶液配制及EDTA溶液的标定、样品的制备及样品的分析过程、样品均匀性及检验重复性等分量引入的不确定度组成,求得测量结果的标准不确定度和扩展不确定度分别为0.70%和1.40%。The uncertainty of volumetry for the determination of the Ca^2＋ in the salt sample by EDTA was studied such as the uncertainty from the disposition of the standard solution and demarcation of the EDTA solution,the preparation and the analysis process of the sample,the sample uniformity and the examination of duplication ,preparation process form the uncertainty of the sample, the standard uncertainty is 0.70%; the spread uncertainty is 1.40%.

关 键 词：盐岩 不确定度 评定 

分 类 号：O655.2[理学—分析化学]