非终点滴定法与其应用

为了实现滴定分析的快速和自动化,本文借鉴以往研究的经验针对其不足1~8],提出了一种新的分析方法,滴定中只要加二次标准液,将采集到的数据通过适当的数学计算,即可得到样品液的浓度,本法不需要已知反应常数、电极转换系数等,对中和度没有严格要求9~11],故具有可操作性和实用性。本法不需要确定终点,不需要全过程滴定,为滴定分析的自动、快速化提供了充分的条件,特别适合冶金、环境、食品、药品的大批量快速分析和在线分析。根据该方法的原理即可开发出一种新的自动分析仪。

A non-equavalent-point titrimetric analysis-A fast computerizational titrimetric method

For the realization of a quick,smart and automatical potentiometric titration,this work provides a new ana-lysis method to overcome those disadvantages in conventional potentiometric titration methods.Only twice standard solution additions are needed in titration procedure and then the collected data(pHi or pMi,Vi) will be put in a mathematical model to account out the concentration of a sample solution.In this method the reaction constant,alternative electron index etc.are not needed to know,and a critical requisition for neutralization degree is not necessary,therefore it can be practiced and used in(volumetric) titrimetric assays.As endpoint determination and complete titration procedure are not needed so that this method can sufficiently provide an intelligent,automatic and quick system to titration analysis for a large number of samples,specially for those in metallurgical industries,environmental or ecological investigations,food industries and pharmaceutical industries and so on.A brandy new auto analysis machine (equipment) should be developed to replace the non-intelligent titrators and complete procedure titrators according to this principle in the paper.