Chromatographic methods for the determination of pyrethrin and pyrethroid pesticide residues in crops, foods and environmental samples.

An overview is given of current progress in the analysis of pyrethrin and pyrethroid pesticide residues in crops, foods and environmental matrices. Extraction and clean-up are considered as the sample pretreatment prior to the determination. The conventional procedures (liquid-liquid partition and column chromatography) as well as the newly developed methods (solid-phase extraction, supercritical fluid extraction) are reviewed. GLC, HPLC and TLC chromatographic methods as the final determination of individual pyrethrin and pyrethroid residues and multi-residue, the enantiomer and diastereomer separation as well as the GC-MS confirmation are discussed and summarized in tabular form.