A hydrogen ion-selective membrane electrode based on N,N,N,N-Tetrabenzylethylenediamine as neutral carrier

N,N,N,N-Tetrabenzylethylenediamine 중성운반체를 이용한 수소 이온 선택성 막전극

  • 정성숙 (건국대학교 문리과대학 화학과) ;
  • 박면용 (건국대학교 문리과대학 화학과) ;
  • 정구춘 (건국대학교 문리과대학 화학과) ;
  • 조동회 (건국대학교 문리과대학 화학과) ;
  • 이경재 (건국대학교 문리과대학 화학과) ;
  • 김재우 (건국대학교 문리과대학 화학과)
  • Received : 1995.05.08
  • Published : 1995.06.25

Abstract

A PVC membrane ion-selective electrodes based on N,N,N,N-tetrabenzylethylenediamine as neutral carrier has been prepared by addition of plasticizers such as phthalates and sebacate and liphophillic additives such as NaTPB. The membrane electrodes were investigated to the electric resistance, response range to hydrogen ion and the interfering effect of alkali and alkline earth metals. A electric resistance hardly had on effect of plasticizers. In case of 0.7% NaTPB added to membrane, response of the electrodes were shown the values near to theoretical Nernstian slope and interferences by alkali and alkaline earth metal were few influenced. The performances of pH-selective electrodes were shown linerality to hydrogen ion between pH 2 and 10 in the presense of alkali and alkaline earth ions. Reproducibility and stability tests were shown good results in the same pH range.

Keywords

Hydrogen ion-selective membrane electrode