A simple method for the determination of organochlorine pollutants and the enantiomers in oil seeds based on matrix solid-phase dispersion

A simple, rapid and effective method was developed based on matrix solid-phase dispersion (MSPD) for the determination of organochlorine pollutants including sixteen organochlorine pesticides (OCPs) and seven polychlorinated biphenyls (PCBs) in oil seeds (peanuts and soybeans). Among the organochlorine pollutants selected, alpha-HCH, heptachlor, o,p'-DDT, o,p'-DDD, trans-chlordane and cis-chlordane were chiral and their enantiomers were determined by GC-ECD with a chiral column. The MSPD procedure was optimized focusing on the type and amount of dispersion sorbent, co-column sorbent and eluting solvent. Under the optimized condition, good recoveries were obtained in the range of 68.9-1033% with relative standard deviations (RSD) values below 16.1% in all cases. LODs and LOQs were in range of 0.1-2.0 ng g(-1) and 0.4-6.7 ng g(-1) respectively. In summary, the method set up was qualified to be used for the determination of the pollutants and the enantiomers in oil seeds. (C) 2015 Elsevier Ltd. All rights reserved.