儿茶酚胺类神经递质的修饰微电极伏安法研究

Voltammetric Determination of Cate-.cholamine with Platinum Microdisc Electrode Modified by a Thin Nickel Hexacyanoferrate Film

本文用电化学方法在铂微盘电极的表面沉积一层铁氰化镍薄膜修饰微电极，对儿茶酚胺类神经递质具有明显的电催化作用，可有效地改善微电极伏安法检测的波形，提高分析检测的准确度和灵敏度，此法用于去甲肾上腺素针剂的样品检测，结果良好。

A thin nickel hexacyanoferrate(NiHCF)film is electrodeposited on the surface of plat-inum microdisc electrode. The voltammetricbehavior and the electrocatalysis of cate-Cholamine(DA,NE,E)of the modified micro-electrodes arediscussed.A linear cyclicvoltammetric response is obtainedfrom 5 ×10￣-3 to 8 × 1O￣-7 mol/L,This method can beused to determine norepinephrine simply andaccurately.