E-AIM Tutorial

Lesson 6: Gas/aerosol Partitioning in Mixed Salt Aerosols


In Lesson 5, we examined solid/aqueous phase equilibrium in solutions containing two salts. Here we study the gas phase partitioning in a system containing the ions Na+, NH4+, H+, and NO3.


Before starting, ensure that this browser window occupies only the left half of your screen. You should leave enough space for another browser window where you can enter data into E-AIM and read the results. If your screen is too small for two windows, print out this tutorial and use this window to run the E-AIM model. In these lessons we assume that you will have two browser windows open.

Select this link to open a second browser window containing the data input page for "comprehensive" calculations using Model III (http://www.aim.env.uea.ac.uk/aim/model3/model3b.php). Arrange the windows on your screen so that both are visible and the left window contains this text.

The Lesson

This consists of the three sets of calculations described in the links below, which should be done in the order listed.

   a.  Solid NaNO3, and gaseous NH3 and HNO3 at 60% relative humidity
   b.  A mixed aqueous solution at 70% relative humidity
   c.  Partitioning as a function of composition


You have completed Lesson 6, and learned that:

Now proceed to Lesson 7, which examines how the properties of single electrolyte solutions depend upon temperature.