Ion mobility

> From: Craig Bingman <cbingman at netcom_com>
> Date: Mon, 12 Aug 1996 00:44:33 -0700 (PDT)
> Conductivity is actually closer to "everything except water" in that it 
> measures the conductivyt in water caused by ions.  So it is sort measures 
> "everything ionic in water."  Too bad some ions are substantially more 
> mobile in water than others.

Which ions are more mobile? Perchance, is there a table giving
mobility parameters?

Are charged ions more mobile than say dissolved oxygen? What makes
ions move about? I presume its more than random kinetic motion
(Brownian motion) in the absence of current (as in a substrate).

The reason I ask about this is it has a bearing on how quickly
nutrients and oxygen and CO2 diffuse through the interstitial
water of the substrate.