单一金属离子配位滴定的终点误差分析及准确滴定条件初探

The End Point Error Analysis about Complexometric Titration of a Single Metal Ion and Preliminary Investigation into Exact Titration Condition

本文从终点误差的原始定义出发,详细推导出了单一金属离子的配位滴定一般性误差计算公式,并得出金属离子能被准确滴定的条件判别式;另外,还从其他角度对终点误差判别式进行进一步合理化解读,从而说明该判据的普遍适用性。最后应用该判据对实际的滴定问题作出简单化判定,并给出滴定的具体条件。

Starting from the original definition about end point error, this article deduces in detail general er-ror formula on complexometric titration of a single metal ion,and the conditional criterion that a single metal ion is titrated exactly is deduced,. In addition, this article unscrambles reasonably the end error criterion from other points of view, so the general applicabiliy of the criterion is confirmed further. Finally, we apply the criterion to decide easily specific titration conditions on actual titration problem.