中文摘要：

将制备的L-半胱胺卟啉铜（Ⅱ）（CuL）配合物自组装在Au电极表面，获得电化学苯酚传感器（CuL/Au）。在pH7．0的磷酸盐缓冲液（PBS）中于-0．4V～0．5V（vs．SCE）电位范围内有一对氧化还原峰，峰电位分别为Epa=0．09V和Epc=-0．06V。实验结果表明CuL能够催化氧化苯酚，通过产物在电位0．1V下的电化学响应对苯酚进行测定。该电极对苯酚表现出快速的响应（响应时间〈10s）。传感器对苯酚的测定具有较宽的线性范围（5．0×10^-7 mol·L^-1 ～2．5×10^-4 mol·L^-1），检出限为2．0×10^-7 mol·L^-1。该电极用于地表水中苯酚含量检测，并与标准方法4-氨基安替比林分光光度法作了对照，结果满意。

英文摘要：

A novel amperometric phenol sensor was constructed through the covalent binding of L - cysteamine tailed porhyrin Cu （Ⅱ） （CuL） on a gold electrode by using the serfassembly technique. The electrode shows good electrochemical activity with one pair of redox peaks （ Epa = 0.09 V ,Epc = - 0.06 V） in pH 7.0 PBS between - 0.4 V ～ 0.5 V （ vs. SCE）. The results show that phenol can be oxidized by immobilized CuL to form a detectable product which is detected at 0.1 V without any mediator. The phenol sensor exhibits a fast response （less than 10 s）. The linear range for phenol detection is from 5.0×10^-7 mol·L^-1 ～2.5×10^-4 mol·L^-1 with a detection limit of 2.0×10^-7 mol·L^-1. This proposed modified electrode also shows excellent reproducibility and stability that makes it an ideal candidate for amperometric detection of phenol in real natural waters.