大学化学 >> 2020, Vol. 35 >> Issue (9): 164-167.doi: 10.3866/PKU.DXHX201910027

师生笔谈 上一篇    下一篇

对林帮公式的再讨论

甘峰(), 朱芳, 方萍萍   

  • 收稿日期:2019-10-15 录用日期:2019-11-21 发布日期:2019-11-29
  • 通讯作者: 甘峰 E-mail:cesgf@mail.sysu.edu.cn
  • 作者简介:甘峰,Email: cesgf@mail.sysu.edu.cn

On the Ringbom's Equation

Feng Gan(), Fang Zhu, Pingping Fang   

  • Received:2019-10-15 Accepted:2019-11-21 Published:2019-11-29
  • Contact: Feng Gan E-mail:cesgf@mail.sysu.edu.cn

摘要:

当前国内外的分析化学教材中滴定终点误差的计算方式尚未达成统一。国内流行采用林帮公式,但此公式存在许多的问题。本文从终点误差的主流定义出发对林帮的终点误差计算式进行了理论分析。结果表明林帮公式的终点误差值必然与主流定义得到的结果不同。本工作可以为合理地确立滴定终点误差计算式提供理论依据。

关键词: 终点误差, 林帮公式

Abstract:

There is no unified equation for calculating titration error in the textbook of analytical chemistry. The Ringbom's equation is the most frequently used, but the equation has problems. This work made a theoretic analysis of the Ringbom's equation based on the definition of titration error. The results show that the calculated end point error using Ringbom's formula is different from that based on the definition. We believe this work can provide fundamental basis for the establishment of reasonable titration error calculation.

Key words: End point error, Ringbom's formula

MSC2000: 

  • G64