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在不同金属基底上采用电化学方法制得聚吡咯膜,经恒电位氧化处理得到对氢离子具有选择性响应的聚吡咯膜氢离子选择电极。电极对氢离子均呈Nernst响应,电极系数在48-57mV/pH不等。响应时间在80-360s之间。电极对氢离子的电位响应机理推测为与氢离子结合-分离平衡有关。
Polypyrrole films were prepared by electrochemical method on different metal substrates. Polypyrrole selective electrodes with selective response to hydrogen ions were obtained by potentiostatic oxidation. Electrodes showed Nernst response to hydrogen ions with electrode coefficients ranging from 48 to 57 mV / pH. Response time between 80-360s. The potential response mechanism of the electrode to hydrogen ion is presumed to be related to the hydrogen ion binding-separation equilibrium.