应用于离子选择电极中的铅离子载体

Lead ion ionophones applied in lead ion-selective electrode

基于国内外最新研究文献和自身研究工作,系统总结了铅离子选择电极用的铅离子载体分子结构和电极性能,它们涉及到导电聚合物、环状大分子、多足配体和过渡金属双盐-导电聚合物形成的有机-无机杂化体等,为设计和构建高性能高选择性铅离子载体提供了思路。导电聚合物固态载体所特有的富电子共轭结构以及导电功能,使其用作铅载体表现突出,配合无增塑的固态基膜,其检测下限大大优于常规电极,在水质分析、医疗诊断、食品营养与安全等等诸多方面将发挥作用。

Based on the latest literatures and our previous research, molecular structure of ionophores for lead ions developed recently and the sensing performance of the resulting lead-ion selective electrode were systematically summarized. This review specifically focuses on the most recent advances in lead ionophpres such as conducting polymers, cyclic macromolecules, multi-footed ligands, organic - inorganic hybrid from transition metal salts and conducting polymers. It would provide a strategy to design and construct ionophores with high performance and selectivity. Both electron-rich conjugated structure and function group endows the solid ionophores with excellent complexsation to lead ions. Combined the ionophore with non -plasticized solid membrane matrix, the resulting sensing membrane would exhibit superiors detection limit, which is much better than that of the conventional electrode. It will play a role in many aspects such as water quality analysis, medical diagnosis, food nutrition and safety.