title: Use of solid-phase extraction disks for analysis of moderately polar and nonpolar pesticides in high-moisture foods.
abstract: This study investigated the use of solid-phase extraction (SPE) disks in analysis of high-moisture (< 2% fat) foods for organophosphorus and organochlorinated pesticides with low (< 25 mg/mL) water solubilities. Five representative foods were each spiked with one of 18 pesticides at 2 levels. Gas chromatography with flame photometric and electrolytic conductivity detection was used to quantitate organophosphates and organochlorinated pesticides, respectively. Essentially complete recoveries (> or = 80%) suggest that use of SPE disks can complement traditional liquid-liquid extraction procedures.
authors: U.S. Food and Drug Administration 60 8th St, Atlanta, GA 30309, USA.
authors: J A
authors: JA
authors: Casanova
mesh_terms: D002849:Chromatography, Gas; D005504:Food Analysis; D005506:Food Contamination / Q000032:analysis; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides / Q000032:analysis* / Q000737:chemistry; D009943:Organophosphorus Compounds; D010573:Pesticide Residues / Q000032:analysis* / Q000737:chemistry; D012015:Reference Standards; D012995:Solubility
chemical_list: D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D009943:Organophosphorus Compounds; D010573:Pesticide Residues