摘要
介绍了线性内插法的基本原理。基于络合滴定中的lgaY(H()aY(H)为酸效应系数)和酸效应曲线,结合实例讨论了应用线性内插法计算金属离子滴定允许的最小pH值的方法以及计算过程中的注意事项。在高酸度和低酸度范围内,只要选择合适的lgaY(H)值,应用线性内插法计算得到的结果与络合滴定理论值完全一致。
The basic principle of linear interpolation method has been introduced in this paper. Based on the lgaY（H） （aY（H） is acidic effective coefficient） of ions and acidic effective curve,the calculating method of the minimum pH at which different metals can be titrated with EDTA ha been cicussed. By choosing the appropriate values of lga（YH） at higher or lower pH level.,the calculated results using linear interpolation method are good agreement with theoretical data of complexometric titration.of ions using linear interpolation method and the matters needing attention in calculation process have been discussed.
出处
《江苏技术师范学院学报》
2010年第6期35-38,共4页
Journal of Jiangsu Teachers University of Technology
关键词
线性内插法
络合滴定
最小pH
linear interpolation method
complexometric titration
minimum pH
