Department of Earth Sciences, University of Bristol
Prof. D.M. Sherman
Lecture 5: Sorption and Ion Exchange
Sorption of ions onto mineral surfaces is the most important abiotic mechanism which controls the
trace element chemistry of natural waters. Ion exchange equilibria control the dissolved concentrations
of major ions such as Ca2+ and Na+.
You should be able to outline:
the concepts of reactive surface sites and surface protonation.
the mechanisms by which ions are sorbed to oxide and silicate surfaces.
the important colloidal mineral phases involved in sorption reactions.
Stumm W. and Morgan JJ (1996) Aquatic Chemistry, Chapter 9, Wiley-InterScience.
Sherman, D.M. (2009) Surface Complexation Modelling: Mineral-Fluid Equilibria at the molecular scale. Chapter 5 in Thermodynamics and Kinetics of Water-Rock Interaction (EH Oelkers and J. Schott, eds.), Reviews in Mineralogy and Geochemistry, 70, 181-206.
Langmuir DL (1997) Chapter 10, in Aqueous and Environmental Geochemistry, Prentice-Hall NJ.
White WM (2013) Section 6.6 in Geochemistry, Wiley-Blackwell (ISBN: 978-0-470-65668-6).
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