Ion mobility

To: Aquatic-Plants at actwin_com
Subject: Ion mobility
From: Stephen.Pushak at saudan_HAC.COM
Date: Mon, 12 Aug 1996 18:04:42 PDT
Cc: cbingman at netcom_com
In-Reply-To: <199608121939.PAA14672 at looney_actwin.com>; from "Aquatic-Plants-Owner at ActWin_com" at Aug 12, 96 3:39 pm

> 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.

Steve