CPC—BF_4^-—PVC修饰电极上硼的示波电位法的研究与应用

Oscillo-potentiometeric Titration of Boron on CPC-BF_4^-PVC Adorn Graphite Electrodes

研制了一种能对BF-4 响应的CPC—BF-4 —PVC修饰电极 提出了一个快速测定硼的零电流示波电位滴定法 以氯化十六烷基吡啶 (CPC)为滴定剂 ,用修饰石墨电极为指示电极 ,甘汞电极为参比电极 利用阴极射线示波器荧光屏上荧光点的突然位移来指示CPC滴定硼的终点 ,具有灵敏、准确、快速等特点

In this paper a CPC-BF - 4-PVC adorn graphite electrodes were made.A simple and rapid method of zero current oscillo potentiometric titration of boran is put forard.Cetylpyridinium chloride(CPC) solution is used as titrant.Adorn graphite electrode and calomel electrode are used as indicator electrode and reference electrode. The end point of tiration of boron by CPC is indicated by the sudden movement of a fluorescent spot on the screen of the cathode ray oscilloraph. The new method is sensitive, precise and quick. The results of determining boron in ceramic with the present method are in accord with the reference values.