Hello,
My question is regarding the quantification of sorption preferences of metals onto a given surface. If I have both arsenic and molybdenum in groundwater sorbing onto HFO, is there a way to tell which (As or Mo) is thermodynamically more stable after sorption? In other words, would some metals have the potential to 'kick off' others that have already sorbed (or out-compete other ions in the groundwater), and if so how can I tell what would remove what? I could probably test this qualitatively by adding and removing metals to see what happens, but am wondering if there is a way to calculate this a bit more quantitatively. I read the section in Bethke, perhaps comparing the products of the equilibrium constant and the boltzman factor of various surface complexes would tell me what I need?
Thanks,
Scott