A novel copper (Ⅱ) ion-selective polyvinyl chloride ( PVC) membrane electrode was prepared using N,N′-bis(N-Isopropyl-N-2-hydroxyethyl)-1,3-benzenedicarboxamide(L) as the ionophore.The influences of the nature of plasticizers and the amounts of the incorporated ionophore and ionic additive ( KTpClPB) on the response characteristics of the electrode were studied.The electrode exhibited Nernstian response and fairly good selectivity with the response slope of (29.1 ±0.2 ) mV/decade in the range of 10 -3 ~10 -1 mol/L, and the detection limit was 2.86 × 10 -4 mol/L.The electrode had a highly selectivity for copper ion over alkali , alkline earth and common transition metal ions.The electrode could be used for the determination of Cu 2+in the waste water , and for the determination of Cu 2+content in real samples.%制备了以N，N′-二（N-异丙基-N-2-羟乙基）-1，3-苯二甲酰胺（L）为载体的PVC膜铜离子选择性电极，研究了电极膜中增塑剂种类及载体和离子定域体（ KTpClPB）含量对电极性能的影响。结果表明：此电极对Cu2＋具有很好的能斯特响应性能，在10-3～10-1 mol/L的浓度范围内呈良好的线性关系，检测下限为2.86×10-4 mol/L，电极响应斜率为（29.1±0.2） mV/decade。选择性上，碱金属、碱土金属及大多数过渡金属离子对Cu2＋的测定基本无干扰。该电极用于废水中Cu2＋含量的测定，并且能对实际样品中Cu2＋含量的直接测定。
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