高等学校化学学报

高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (8): 847.

• 论文 • 上一篇    下一篇

四苯硼酸盐PVC膜锂离子选择电极的研究

庄云龙, 漆德瑶   

  1. 上海工业大学化学化工系
  • 收稿日期:1987-01-02 出版日期:1988-08-24 发布日期:1988-08-24
  • 通讯作者: 庄云龙
  • 基金资助:

    国家自然科学基金

Studies on PVC Lithium Ion-Selective Electrodes Based on Tetraphenylborates

Zhuang Yunlong, Qi Deyao   

  1. Department of Chemistry and Chemical Engineering, Shanghai University of Technology, Shanghai
  • Received:1987-01-02 Online:1988-08-24 Published:1988-08-24

PDF (PC)

被引次数

5

摘要： 四苯硼酸盐与介体溶剂所组成的PVC膜对碱金属离子的选择性同溶剂的性质有关[1]。因此,可选择适当的溶剂研制碱金属离子选择电极。本工作研究了以DOPP(苯基膦酸二辛酯)或TBP(磷酸三丁酯)为介体溶剂,NaTPB(四苯硼钠)或KTPB(四苯硼钾)为活性物质的PVC膜对金属离子的选择响应。结果表明,DOPP为溶剂、KTPB为活性物质可制备性能良好的PVC膜Li+选择电极。该电极的电化学性能接近或优于新近报道的几种Li+选择电极[2~7]。

关键词: 锂离子选择电极, 介体溶剂, 四苯硼钠, 四苯硼钾

Abstract: This paper describes the selectivities of a PVCmembrane based on tetra-phenylborate (NaTPBor KTPB) containing dioctyl phenylphosphonate (DOPP) or tributylphosphate (TBP) as mediator solvent for metal ions. The results obtained showed that a lithium ion-selective electrode based on KTPBwith DOPPas. mediator solvent is better, giving linear response in the activity range of 5×10-5-10-1mol/LLi+ and detection limit of 6.5×10-6mol/LLi+. Selectivity coefficients are as follows: The performances of the electrode were compared with those of typical lithium selective electrodes reported recently. This electrode is an useful sensor for lithium.

Key words: Li+ Ion-selective electrode, Mediator solvent, Sodium tetraphenylborate, Potassium tetraphenylborate

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