Ion-Selectrodes based on Calcium Ferrite

Kim, Chung-Hee; 김정희

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P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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

e-Submission

Vol.5, No.4

PubReader Citation

Ion-Selectrodes based on Calcium Ferrite

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

1992, v.5 no.4, pp.401-408

Kim, Chung-Hee

Kim, C. (1992). Ion-Selectrodes based on Calcium Ferrite. , 5(4), 401-408.

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Abstract

The ion-selectrodes based on calcium ferrite were prepared by mixing calcium oxide with ferric oxide on molar ratio of 0.6:1.4, 0.8:1.2, 1.0:1.0, respectively. The specimens were sintered at $1400^{\circ}C$ for 2hrs in $O_2$ and for 20min in $H_2$ atmosphere. The selectrode sintered in hydrogen atmosphere showed better responded potential and wider range of responded concentration than selectrode sintered in oxygen atmosphere. The ion-selectrodes base on calcium ferrite(0.6:1.4 molar ratio.) showed the highest potential to bivalent cations such as $Ca^{2+}$, $Ba^{2+}$, $Mg^{2+}$, $Zn^{2+}$ and halogen anions such as $I^-$, $Br^-$ in the range of $10^{-1}{\sim}10^{-7}M$. It showed good agreement with theoretical nernstian values.