主题：【资料】标准溶液测量不确定度！

标准溶液测量不确定度！
作者：王雪莹
(山东省冶金科学研究院标样所，济南250014)
摘要：对标准溶液测量不确定度进行合理评定，充分估计分析不确定度的来源，从量值检验时
考虑到影响不确定度的各种因素，测量方法的不确定度．配制时考虑到影响不确定度的各种因素以
及标准溶液的不均匀性和在有效期内的变动性所引起的不确定度等方面进行综合分析，得出其扩
展不确定度。并以镍标准溶液为例作实际分析。
关键词：标准溶液；测量不确定度；评定
中图分类号：O657．31 文献标识码：A 文章编号：1001—4020(2004)07—0392—03
EVALUATION OF UNCERTAINTY OF M EASUREM ENT OF
STANDARD SOLUTIONS IN AQUEOUS MEDIUM
W ANG Xue-ying
(Center of Certified Ref￡fence Materia[s，Shandong,"VletaHurgic。uL Research Institute．Ji'nan 250014，China)
Abstraet： Fhe uncertainty of measurement of standard solutions in aqueous medium，especially the standard
solutions of metal ions used as primary s tandards in various analytical methods． was evaluated． Sources of
uncertainty，from methods of analysis，statistical calculation of analytical data，methods of preparation， nonhomogeneity
and unstability of solutions before date of expiration， were fully considered and analyzed
comprehensively．Based on these factors， the expanded uncertainty of standard solutions was obtained． The
preparation and stardardization of an aqueous nickel standard solution was described and its uncertainty of
measurernent was evaluated as an illustration．
Keywords：Uncertainty of measurement；Standard solutions；Evaluation of uncertainty
标准溶液测量不确定度