摘要
以化学滴定法测定溶液中Ba2+浓度时,共存的Sr2+因性质相近,是主要干扰组分。本文利用 ksp(BaCrO4)=1.2×10-10<<ksp(BaCrO4)2.2×10-5,实现了在Sr2+共存条件下,对常量Ba2+的电导滴定,相对误差<6%。
When we come to measure Ba^2+ content in solutions by titrimetric analysis, the Sr^2+ (if it exists) will interfere in our measurement, Here, we try to measure Ba^2+ (macro content) while Sr^2+ is also here, Because ksp(BaCrO4)=1.2 ×10^-10 〈〈ksp(BaCrO4)2.2 × 10^-5 , we can do this job quite well. The method we used is called conductometric titration, and it's relative error 〈 6%.
出处
《安徽科技学院学报》
2006年第1期27-29,共3页
Journal of Anhui Science and Technology University
关键词
电导滴定法
钡离子
测定
Conductometric titration
Barium ion
Measurement