【摘要】 制备了 2 5 ,2 7-二羟基 -2 6,2 8-二苯硫丙氧基 -杯 [4]芳烃 -PVC修饰膜电极。研究了该修饰电极在碱性、酸性介质中的伏安特性。实验表明 :修饰电极在 2mol·L- 1NaOH中的氧化还原过程为不可逆氧化过程 ,而乙醇的存在使碱性条件下的氧化过程受到抑制 ;在 1mol·L- 1HCl体系中 ,修饰电极具有良好的电化学活性 ,在 -1 .0V～ 0 .6V范围内有一对准可逆的氧化还原峰 ,并且在该条件下修饰电极对Zn2 + 、Pb2 + 、Cd2 + 、Hg2 + 、Ag+ 五种金属离子有良好的识别响应。更多还原

【Abstract】 Glassy carbon electrode modified by 25,27-dihydroxy-26,28- bis(benlylthiapropoxy) calixarene-PVC has been made. The electrochemical character of the modified electrode was investigated by Cyclic Voltammetric in NaOH-ethanol?NaOH and HCl solution. Electrode modified by 25,27-dihydroxy-26,28- bis(benlylthiapropoxy) calixarene -PVC was found that there were excellent respondences to Zn 2+ ?Ag +?Cd 2+ ?Hg 2+ ?Pb 2+ in HCl. The applied voltage?time and pH of electrolyte were found to affect stripping peak height.更多还原