高等学校化学学报

高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (7): 590.

• 研究论文 • 上一篇    下一篇

中性载体PVC膜铅离子选择电极的研制

向远, 龙有前, 高肖梅   

  1. 湘潭机电专科学校
  • 收稿日期:1985-05-27 出版日期:1986-07-24 发布日期:1986-07-24

A Lead Ion Selective Electrode Based on the Neutral Carrier PVC Matric Membrane

Xiang Yuan, Long Youqian, Gao Xiaomei   

  1. Xiangtai Machiaery and Eertricity College, Xiangtai
  • Received:1985-05-27 Online:1986-07-24 Published:1986-07-24

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被引次数

1

摘要： 本文以Igepalco-880-2TPB为电活性物质,研制了中性载体PVC膜铅离子选择性电极;以邻硝基二苯醚和邻硝基十二烷基醚为介体溶剂,测定了电极对一些常见的一价和二价离子的选择系数,除钡离子外,均在10-3—10-5数量级;适用的pN范围为2—5,电极的重现性、稳定性均较好。

Abstract: Anew lead ion-selective electrode of PVCmembrane based on the neutral carrier of Pb·lgepal co-880·2TPBgives a fast stable and reproducible linear response within a lerd nitrate concentration range of 7×10-6M-1×0-1M.The coefficient of selectivity of a number of cations varries from 10-3 to 10-5 The life time of the membrane is over 7 months.The electrode can be used as a incicator electrode for the potcntiomeiric titralion of Cr(Ⅵ) in electrical plating solution.

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