- P-ISSN 1225-0163
- E-ISSN 2288-8985
N,N,N,N-Tetrabenzylethylenediamine 중성운반체를 이용하여 PVC 수소이온 선택성 막전극을 제조하였다. 가소제 종류(phthalates와 sebacate) 및 친지방성 첨가제(NaTPB)에 따른 막전극의 전기저항과 수소이온 감응범위 및 알칼리금속과 알칼리토금속의 존재하에서 방해효과를 조사하였다. 가소제 종류에 의한 전기저항은 영향을 거의 받지 않았고 NaTPB 0.7%의 경우 수소이온에 대한 Nernstian 기울기는 가장 이론값에 근접하였으며, 또한 알칼리금속 및 알칼리토금속에 의한 방해도 적게 받았다. pH-선택성 고분자 막전극은 pH 2~10 범위내에서 선형적이고, 산과 알칼리용액 중에서 안정성 및 재현성 시험 결과 매우 좋게 나타났다.
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.