Department of Chemistry, Shahid Bahonar University of Kerman, Kerman 76169, Iran.
Talanta. 2003 Jan 2;59(1):47-53. doi: 10.1016/s0039-9140(02)00462-9.
A PVC membrane electrode for Ni(2+) ions based on a recently synthesized mercapto compound, as an ionophore was prepared. The electrode exhibits a Nernstian slope of 28-30 mV per concentration decade at wide concentration range of (1.0x10(-2)-1.0x10(-7) M). It has a fast response time of <15 s and can be used for at least 4 weeks. The potentiometric response is independent of the pH of the test solution in the pH range 5-8.5. The proposed electrode revealed good selectivities over a wide variety of other cations including alkali, alkaline earth, transition and heavy metal ions. It was successfully applied to the direct determination and potentiometric titration of nickel ion with EDTA.
一种基于最近合成的巯基化合物的 PVC 膜电极被制备用于 Ni(2+)离子。该电极在较宽的浓度范围内（1.0x10(-2)-1.0x10(-7) M）表现出每浓度十年 28-30 mV 的 Nernst 斜率。它具有<15 s 的快速响应时间，并且可以至少使用 4 周。在 pH 5-8.5 的测试溶液范围内，电位响应与测试溶液的 pH 无关。该电极对包括碱金属、碱土金属、过渡金属和重金属离子在内的多种其他阳离子具有良好的选择性。它成功地应用于 EDTA 对镍离子的直接测定和电位滴定。
