Potentiometric performances of polymer membrane electrode based on cyclosporin

싸이크로스포린을 이용한 고분자막 전위차 전극

  • 이인숙 (서울여자대학교 화학과)
  • Received : 2005.11.21
  • Accepted : 2005.11.29
  • Published : 2005.12.26

Abstract

The main component governing selectivity in ion-selective electrodes and optodes is the ionophore. For this reason, a member of natural products that possess selective ion-binding properties have long been sought after. By applying this principle, the performance of cyclosporin used as neutral carriers for calcium selective polymeric membrane electrode was investigated. The calcium ion-selective electrode based on cyclosporin gave a good Nernstian response of 26.6 mV per decade for calcium ion in the activity range $1{\times}10^{-6}M$ to $1{\times}10^{-2}M$. The optimized calcium ion-selective electrode displayed very comparable selectivity for $Ca^{2+}$ ion against alkali and alkaline earth metal ions, $Na^{2+}$, and $Mg^{2+}$ in particular.

Acknowledgement

Supported by : 서울여자대학교

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