Analytical Sciences
Online ISSN : 1348-2246
Print ISSN : 0910-6340
ISSN-L : 0910-6340
Original Papers
Voltammetric Studies of Antimony Ions in Soda-lime-silica Glass Melts up to 1873 K
Hiroshi YAMASHITAShigeru YAMAGUCHIRyuichi NISHIMURATakashi MAEKAWA
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2001 Volume 17 Issue 1 Pages 45-50

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Abstract

The half wave potential of reduction of Sb5+ in 16Na2O·10CaO·74SiO2 glass melts was examined by differential pulse voltammetry up to 1873 K. The half wave potential shifted to the positive direction with an increase in temperature. The results indicate that the equilibrium of Sb5+/Sb3+ shifted to negative direction with an increase in temperature. The half wave potential shifted to positive direction (48 mV at 1473 K) when the atmosphere over the melts changed from pure oxygen gas to air, in agreement with the theoretical prediction. The reversibility of Pt:O2 reference electrode is confirmed.

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© 2001 by The Japan Society for Analytical Chemistry
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