Nitrate Ion-Selective Membrane Electrode Based on Complex of Ammonia Modified Bakelite A-Ni(II) Nitrate

Bakelite A-Ni(II) 착물의 질산이온 선택성 막전극

  • 김환기 (고려대학교 이과대학 화학과) ;
  • 신두순 (고려대학교 이과대학 화학과)
  • Published : 1987.06.20


A nitrate ion-selective PVC membrane electrode based on ammonia modified bakelite A-Ni$(NO_3)_2$ complex as ion exchanger was prepared. The electrode gave a linear response with a Nernstian slope of 60mV per decade within the concentration range $1{\sim}10^{-4}$ M $KNO_3$ but nonresponse to hydrogen ion and multivalent anions. The selectivity, response time and life time of the electrode were investigated and it was found that the electrode exhibited good selectivity for four univalent anions ($Cl^-,\;Br^-,\;I^-,\;{ClO_4}^-$). Analytical application to the determination of nitrate were also studied.



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