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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。
A 25,2,2-dihydroxy-2,6,2-diphenylthiopropoxy-calix [4] arene-PVC modified membrane electrode was prepared. The voltammetric behavior of the modified electrode in alkaline and acidic media was studied. The experimental results showed that the redox process of the modified electrode in 2mol·L-1NaOH was irreversible oxidation process, while the presence of ethanol inhibited the oxidation process in alkaline solution. In 1mol·L-1HCl system, the modified electrode had good Electrochemical activity, in the range of -1. 0V ~ 0 .6V have a pair of quasi-reversible redox peaks, and under the conditions of the electrode modified Zn2 +, Pb2 +, Cd2 +, Hg2 +, Ag + five kinds of metal ions are Good recognition response.