Pesticides: Other Methods of Cleanup

Pesticides

=
Early methods involved liquid-liquid partitioning, adsorption chromatography and chemical destruction of lipids with strong base and acid. Later developments involving sweep codistillation, gel-permeation chromatography and reversed-phase liquid chromatography on alkyl-bonded microparticulate silica. Supercritical fluid extraction should prove useful in this regard.=====

=
The problems of the extraction solvent selection and clean-up procedures using different types of adsorption column chromatography or gel permeation chromatography are discussed. Attention is also given to alternative techniques such as supercritical fluid extraction (SFE), matrix solid-phase dispersion (extraction) (MSPD) and sweep co-distillation that are used for sample processing prior to GC and LC analysis.=====