A simple method for the determination of organochlorine pollutants and the enantiomers in oil seeds based on matrix solid-phase dispersion. (1st March 2016) - Zhan, Jing
Graphical abstract: Highlights: Organochlorine pollutants in complex oily matrix were effectively determined. This MSPD method could almost clean up lipids without cumbersome steps. A chiral residue analysis method was developed. Chiral organochlorine pollutants were determined on an enantiomeric level. Abstract: 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, α-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 68.9–103.3% 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.