两铂电极零电流示波双电位滴定法

Zero Current Oscillobipotentiometric Titration on Two Pt Electrodes

本文提出了用阴极射线示波器荧光屏上荧光点的显著位移来指示零电流双电位滴定终点的新方法,并对其特点进行了研究。新的终点指示方法能响应两电极间ΔE的瞬时变化,因而比常用的方法灵敏,扩大了两铂电极零电流双电位滴定的应用范围。

A new technique of end-point indication in zero current bipotentiometric titration on two Pt electrodes is given. A cathode-ray oscillograph is used to replace the usual voltage-measuring instrument. The sudden jumping of a fluorescent spot on the fluorescent screen indicates the end-point of titration. This method of indication can response the transitory potential difference of the two Pt electrodes. The end-point is directly visual and sensitive, much better than the conventional method.