Abstract
In a test of current cories of paper electrophoresis, the mobilities of zones of aliphatic ammonium ions were determined in moist paper between glass plates kept at 25.0° +−. Using very dilute solutions of hydorchloric acid or potassium chloride as background electrolytes, the zone mobilities of small monovalent ions or potassium chloride as background electrolytes, the zone mobilities of small monovalent ions were approximately equal to the mobility calculated for the ion in free solution multiplied by an “obstructive factor” due to the paper. Large monovalent ions showed low zone mobilities because of adsorption by the paper. Zones of divalent ions moved in bacdground hydrochloric acid solutions with excessive streaking. Mono- and divalent ions moved in well- defined zones in aqueous acetic acid of varying concentrations; their zone mobilities were given with fair precision by empirical equation taking account of the viscosities of the media.
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