摘要
本文介绍了碘酸钾标准物质的研制程序，其中包括溶液的配制、均匀性和稳定性检验、分析方法和数据统计处理方法等。并选择了具有高准确度的精密库仑法和自动电位滴定法分析定值，对制备浓度为０．０１ｍｏｌ／ｄｍ３碘酸钾标准物质，其定值的相对不确定度可达０．１％。
In the paper, the research and preparation programme for certified reference material of potassium iodate for determining dissolved oxygen in the sea water were described in detail, including preparation of the solution, examination of homogeneity and stability, analytical method and statistical method of data treatment Certified value was obtained by the high accuracy Precise Coulomb method and the Automatic Potential Titration method The relative uncertainty of certified value for 0 01 mol/dm 3 potassium iodate reaches 0 1%, and its stability term is over one year
出处
《东海海洋》
1997年第1期26-37,共12页
Donghai Marine Science
关键词
碘酸钾
标准物质
定值
海水
溶解氧
potassium iodate, certified reference material (CRM), certified value
