高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (6): 742.

• 论文 • 上一篇    下一篇

冠醚载体离子电极的选择特性研究

杨云慧1, 奚治文2, 田保民2, 黄枢2   

  1. 1. 云南教育学院, 昆明, 650031;
    2. 四川大学化学系
  • 收稿日期:1989-12-23 出版日期:1991-06-24 发布日期:1991-06-24
  • 通讯作者: 杨云慧

Studies on the Rule of Selectivity Coefficients of Ion-Selective Electrodes with Crown Ethers Neutral Carrier

Yang Yun-hui1, Xi Zhi-wen2, Tian Bao-min2, Huang Shu2   

  1. 1. Yunnan Education College, Kunming, 650031;
    2. Department of Chemistry, Shichuan University
  • Received:1989-12-23 Online:1991-06-24 Published:1991-06-24

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被引次数

2

摘要： 阴离子选择电极选择性系数随干扰离子rj/zj的变化规律已有报道,但冠醚为中性载体的金属离子电极的选择性系数规律未见报道。本文采用不同桥间结构的11种苯并双冠醚作为中性载体,从钾电极出发探讨了不同冠醚电极选择性系数与干扰离子rj/zj间的关系;并以4种烃型双冠醚为中性载体,分别考察了它们对Li+、Rb+、Cs+、Ag+、Ba2+离子的响应规律。

关键词: 冠醚, 离子选择电极, 选择性系数规律

Abstract: In this paper, a formula lgKjzpot=-A[(rj/zj-C]2-B(A, B, C: constants; rj: radius of the interfering ion; zj: charge of the interfering ion) is given which describes the dependence of selectivity coefficients of crown ether electrode on rj/zjof interfering ions by means of potassium electrodes based on eleven alkanodioyl polymethylene and 2, 2'-dihydroxy polymethylene bis ( 4'-benzo-15-crown-5). The results of response of Li+, Ba2+, Ag+, Rb+, Cs+of electrodes/with four polymethylene bis(4'-benzo-15-C-5) as the neutral carriers proved by the above formula was correct.

Key words: Crown ether, Ion-selective electrode, Rule of selectivity coefficients

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