Development of an Analytical Method Based on Accelerated Solvent Extraction, Solid-Phase Extraction Clean-Up, then GC-ECD for Analysis of Fourteen Organochlorine Pesticides in Cereal Crops.

method has been developed for analysis of 14 organochlorine pesticide residues in cereals. After accelerated solvent extraction and solid-phase extraction clean-up on graphitized carbon black/primary-secondary amine (GCB/PSA), to reduce co-extraction of interferences, pesticide residues were analyzed by gas chromatography with electron-capture detection. When the method was validated, recoveries were in the range 78-116%, relative standard deviations were in the range 1.1-16.3%, and limits of detection and quantification were from 1.5 to 4.2 μg kg and from 4.6 to 12.5 μg kg, respectively. [ABSTRACT FROM AUTHOR]