高等学校化学学报

高等学校化学学报 ›› 1983, Vol. 4 ›› Issue (5): 664.

• 研究简报 • 上一篇    下一篇

钴(Ⅱ)、锌(Ⅱ)离子选择电极研制

惠腾恩, 杭瑚   

  1. 中国科技大学近代化学系
  • 收稿日期:1982-03-29 出版日期:1983-10-24 发布日期:1983-10-24

INVESTIGATION OF COBALT(Ⅱ) AND ZINC(Ⅱ) SELECTIVE ELECTRODES

Hui Teng'en, Hang Hu   

  1. Department of Modern Chemistry, University of Science and Technology of China, Hefei
  • Received:1982-03-29 Online:1983-10-24 Published:1983-10-24

PDF (PC)

被引次数

5

摘要： 钴(Ⅱ)离子选择电极的研制,国外已有一些报导,但PVC膜钴(Ⅱ)离子选择电极研制较为成功的是Burger和Pethösup[1];锌(Ⅱ)离子选择电极的研制,可达实用的报导不多[2-4],PVC膜锌(Ⅱ)离子选择电极国外未见报导。

Abstract: This paper reports cobalt( Ⅱ ) selective electrode and zinc(Ⅱ) selective electrode made from liquid ion exchange membrane trapped in PVC. The sensors are surface-active agent [C12H25N(CH3)2CH3]Br-tetrathiocyanatocobaltate( Ⅱ ) ion pair and[C12H25N(CH3)2CH3] Br-tetrathiocyanatozincate(Ⅱ) ion pair respectively. The responses correspond to Nernstian relation for cobalt(Ⅱ) selective electrode with the CO2+ concentration rage 10-1-10-4.5 moles, and for zinc(Ⅱ) selective electrode with the Zn2+ concentration range 10-1-10-5 moles. Membrane potentials are independent of pH from 1.3 to 9.1 for cobalt(Ⅱ) selective electrode and from 1.0 to 8.5 for zinc(Ⅱ) selective electrode. The life of cobalt( Ⅱ ) selective electrode is 4 to 6 months while zinc( Ⅱ ) selective electrode is 6 months.

TrendMD: