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中性载体离子选择性电极的膜是由中性载体、增塑剂(或膜溶剂),以及支撑物如聚氯乙烯(PVC)三种材料组成的。对中性载体为冠醚的PVC膜钾电极而言,冠醚的结构,支撑物的类型对电极性能的影响已有报导。关于增塑剂的作用尚缺乏全面深入的研究,它对电极选择性影响的原因还存在不同的说法。本文用自制的冠醚PVC膜钾电极研究增塑剂对电极性能——主要是选择性和亲脂类阴离子干扰的影响,对其原因在实
Neutral Carrier The membrane for the ion selective electrode consists of a neutral support, a plasticizer (or membrane solvent), and a support such as polyvinyl chloride (PVC). For the PVC membrane potassium electrode with a neutral carrier of crown ether, the influence of the structure of the crown ether and the type of support on the performance of the electrode has been reported. The role of plasticizers is still a lack of comprehensive and in-depth study of its selective effect on the electrode there are still different reasons. In this paper, with homemade crown ether PVC membrane potassium electrode plasticizer on the electrode performance - mainly selective and lipophilic anionic interference, the reason for this