Biomaterial Database

Chromatographic methods for the determination of pyrethrin and pyrethroid pesticide residues in crops, foods and environmental samples. 1996

Z M Chen, and Y H Wang

Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang, China.

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.

UI	MeSH Term	Description	Entries
D007306	Insecticides	Pesticides designed to control insects that are harmful to man. The insects may be directly harmful, as those acting as disease vectors, or indirectly harmful, as destroyers of crops, food products, or textile fabrics.	Insecticide
D010573	Pesticide Residues	Pesticides or their breakdown products remaining in the environment following their normal use or accidental contamination.	Pesticide Residue,Residue, Pesticide,Residues, Pesticide
D011722	Pyrethrins	The active insecticidal constituent of CHRYSANTHEMUM CINERARIIFOLIUM flowers. Pyrethrin I is the pyretholone ester of chrysanthemummonocarboxylic acid and pyrethrin II is the pyretholone ester of chrysanthemumdicarboxylic acid monomethyl ester.	Pyrethrin,Pyrethroid,Pyrethroids
D002845	Chromatography	Techniques used to separate mixtures of substances based on differences in the relative affinities of the substances for mobile and stationary phases. A mobile phase (fluid or gas) passes through a column containing a stationary phase of porous solid or liquid coated on a solid support. Usage is both analytical for small amounts and preparative for bulk amounts.	Chromatographies
D004785	Environmental Pollutants	Substances or energies, for example heat or light, which when introduced into the air, water, or land threaten life or health of individuals or ECOSYSTEMS.	Environmental Pollutant,Pollutant,Pollutants,Pollutants, Environmental,Pollutant, Environmental
D005506	Food Contamination	The presence in food of harmful, unpalatable, or otherwise objectionable foreign substances, e.g. chemicals, microorganisms or diluents, before, during, or after processing or storage.	Food Adulteration,Adulteration, Food,Adulterations, Food,Contamination, Food,Contaminations, Food,Food Adulterations,Food Contaminations