Studies on Inorganic Chromatography. IV. Fundamental Studies on Paper Electrochromatography. (1)

摘要

A filter paper wetted with an electrolyte was placed between two glass plates coated with a silicone resin. Electric current was passed through this paper in order to find the relationship between the time, voltage, electric current, and temperature with degree of mobility of numerous inorganic ions. It was found that a linear relation always existed, in any of the electrolyte used, between the distance of mobility and time and voltage. The effect of electric current was examined with sodium nitrate as an electrolyte and it was found that electric current did not influence the mobility of the ions as much as voltage. A metallic thermostatic vat, coated with insulating paint, was devised and the mobility of ions at various temperatures was examined and it was found that the mobility generally increased with the increase of temperature and this influence was found to be greater the larger the mobility of the ion. Influence of evaporation by the warming of the filter paper was quantitatively examined, using the Durrum apparatus, with either direct or alternative current as the electric source, from the relationship between the position of the sample placed and the distance of ionic mobility. It was thereby unexpectedly found that a great deal of effect was caused by evaporation.