Department of Earth Sciences, University of Bristol
Prof. D.M. Sherman
Lecture 9: Chemistry of Groundwater
Much of our water supply comes from groundwater. The residence time of
groundwater is long enough to allow chemical equilibrium with the more soluble minerals
(e.g., carbonates, sulfates) in aquifer rocks..
At the low ionic strengths of groundwater, ion exchange reactions
release Na and take up Ca. Pollution of groundwater results from
inorganic contaminants (esp. arsenic and nitrate) and organics such as chlorinated
You should be able to outline:
the chemical processes that determine the major element chemistry of groundwater.