Transactions of the INDIAN CERAMIC SOCIETY Vol. 26 1967
Glass Electrodes for the Direct Measurement of
Sodium Ion Activity
s. K. GUHA, A. P. BHATTACHARYYA AND SUDHIR SEN
Pages : 136-141
DOI : 10.1080/0371750X.1967.10855599
Abstract
One Lithia Alumina Silicate glass and three Lithia Soda Alumina Silicate glasses
were melted and studied for their suitability as sodium electrodes. Out of these
only No. 1 glass responded to the activity of Na+ ions c.nd produced slope values
very near to the ideal Nernst value at the temperature when the measured e.m.f data
of these electrodes were plotted against the corresponding pNa (-Log aNa+) values
of the pure NaCl solutions. Also, the electrodes from No. 1 glasses were found to have
hardly any sensitivity towrds K+ ions when their e.m.f was measured in pure KCI
solutions. The interfering effect of K+ ions on the activity measurements of Na+ ions
was also examined and found to be insignificant.