ELECTROMIGRATION OF IONS ABSORBED BY FILTER PAPER

Abstract
The variation with absorbance of the zone mobilities and obstructive factors for a number of inorganic ions has been investigated in acetic acid and in ammonium hydroxide at several concentrations. The results agree with the form of the semiempirical equation of Crawford and Edward. For a given ion the apparent obstructive factor defined as[Formula: see text]remains fairly constant as the concentration of the background electrolyte is changed, except in the very dilute region. However, the apparent obstructive factor varies with the ion and the background electrolyte indicating that specific effects, which are not considered in the equation, are important.

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