This chapter from David Harvey's complete e-text covers the general theory of column chromatography, GC, HPLC, and electrophoresis. Available as a downloadable pdf this 102 page chapter includes diagrams, examples and problems and provides an excellent introduction to separations.
The website is available here .
These materials on chemical equilibrium are designed to spark an active learning environment in the classroom. Materials can be downloaded and modified to fit particular learning goals.
The website is available here .
A complete textbook for Quantitative Analysis is freely downloadable. Teach yourself Analytical Chemistry, or be part of a class on the subject.
The website is available here .