光度滴定法在分析化学中的应用  

Application of photometric titration method in analytical chemistry

作　　者：马立利[1] 丁奇 许雯[1] 王胜楠 曹丽华 郎爽[1] 邵鹏[1] 贾丽[1] Ma Lili;Ding Qi;Xu Wen;Wang Shengnan;Cao Lihua;Lang Shuang;Shao Peng;Jia Li(Beijing Engineering Research Center of Food Safety Analysis,Beijing Center for Physical and Chemical Analysis,Beijing 100089,China;Nanjing Customs Industrial Products Testing Center,Nanjing 210011,China)

机构地区：[1]北京市理化分析测试中心,北京市食品安全分析测试工程技术研究中心,北京100089 [2]南京海关工业产品检测中心,南京210011

出　　处：《化学分析计量》2021年第7期97-102,共6页Chemical Analysis And Meterage

基　　金：国家重点研发计划项目(2018YFF01013900)。

摘　　要：介绍了光度滴定法的基本原理和装置,综述了光度滴定法在食品、药品、化工等领域的应用情况。我国光度滴定法大多是通过浸在溶剂中的光度电极的电位变化来确定滴定终点,操作复杂;国外则是自制光度滴定仪系统,可以实现无校正曲线情况下的定量,自动化程度更高。因此,在推进光度滴定技术在分析化学中应用的同时,我国还需要开发一系列集合溶剂流路控制系统和高精度光度计的全自动滴定装置,以满足食品、药品、化工等领域快速检测、批量检测的要求。The principle and device composition of the photometric titration method were briefly introduced.The application of photometric titration in food analysis,drug analysis,and chemical analysis were summarized.In China,the photometric titration endpoint was determined by potential change of photometric electrode immersing in solution,and the operation was complex.However,photometric titration was accomplished employing a homemade photometric titrator abroad.This procedure does not require the construction of analytical curves,and all the steps were carried out without any action of the operator.In this way,it can be considered a fully automated titration procedure.Therefore,when the application of photometric titration method is popularized in China,a series of fully automatic photometric titration devices,assembled with the solution handling module and the photometer,should also be developed to meet the requirement of rapid detection and batch titration in food analysis,drug analysis,and chemical analysis.

关 键 词：光度滴定 光度电极 电位滴定 

分 类 号：O657.9[理学—分析化学]