Glass electrode response to lithium ion activity. Effects of sodium, potassium, ammonium, tetramethyl-, tetraethyl-, and tetra-n-butyl ammonium ions in water and 50% water-ethanol mixture

Mukherjee, L.

Electrochimica Acta 22(11): 1255-1257


ISSN/ISBN: 0013-4686
Accession: 084301891

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Competing effects of Na+, K+, NH+4 and three quaternary ammonium ions, Me4N+, Et4N+, and n-Bu4N+, on the response of a lithium ion-selective glass electrode have been investigated in water and 50% water-ethanol mixture. The results have been analysed according to an ion-exchange model developed earlier for solutions in propylene carbonate. It appears that the effects of the two groups of cations can be rationalized in terms of the relative ease (or difficulty) or desolvation experienced by a lithium ion, in their presence, prior to its incorporation into the glass phase.