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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

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

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1995, v.8 no.2, pp.187-193
Jeong, Seong-Suk
Park, Myon-Yong
Chung, Koo-Chun
Cho, Dong-Hoe
Lee, Kyeong-Jae
Kim, Jae-Woo
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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


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