SOME FACTORS AFFECTING THE ZONE MOBILITY OF INORGANIC IONS DURING ELECTROMIGRATION IN PAPER

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Abstract
A number of factors which affect the zone mobilities of inorganic ions were investigated. The influence of temperature was that expected from its effect on the conductance in free solution. The zone mobility tends to decrease, and the zone size to increase, with increasing migrant concentration. Excess foreign ions in the initial migrant zone can have a similar result. Experiments in the presence of the swelling agent thiourea indicate that swelling has at least a constant and perhaps a negligible influence on the obstructive factor. Finally, variation of the zone mobility with paper type was considered in relation to the ion-exchange capacity. Of the ions studied, only copper showed any correlation. Some observations were made using ion-exchange papers.