The $Pb^{2+}$ Ion Affinitive Membrane Electrode Based on New Calix[4]arene Ionophore

새로운 캘릭스[4]아렌 유도체를 이용한 $Pb^{2+}$ 이온 친화성 막전극

  • 김은진 (숭실대학교 자연과학대학 화학과) ;
  • 김민규 (숭실대학교 자연과학대학 화학과) ;
  • 남궁미옥 (숭실대학교 자연과학대학 화학과) ;
  • 백경수 (숭실대학교 자연과학대학 화학과) ;
  • 윤영자 (숭실대학교 자연과학대학 화학과)
  • Published : 19981000


The ion selective membrane electrode made of calix[4]arene-based host 1 as ionophore, poly (vinyl chloride) (PVC) as matrix and dioctylsebacate (DOS) as a plasticizer was studied. The potential responses of this membrane electrode to alkali, alkaline earth and transition metal cations were investigated. Especially this membrane electrode was turned out to be affinitive for $Pb^{2+}$ in the deionized water. It was observed that the response was linear in the concentration range from $1.0 \times 10^{-1} M to 1.0 \times 10^{-6} M of Pb^{2+}$ and its slope (26.5 mV/decade) was near to the sub-Nernstian response in deionized water. Also, the potential was maintained constantly in the range of pH $4.00 \sim 12.00$, which supports the potential usage as $Pb^{2+}$ affinitive electrode in the deionized water.



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