PMID- 22571770 OWN - NLM STAT- MEDLINE DCOM- 20120926 LR - 20191210 IS - 1944-0057 (Electronic) IS - 1944-0057 (Linking) VI - 29 IP - 7 DP - 2012 TI - Analysing organochlorine pesticides in strawberry jams using GC-ECD, GC-MS/MS and QuEChERS sample preparation. PG - 1074-84 LID - 10.1080/19440049.2012.682319 [doi] AB - This paper describes a comparison of adaptations of the QuEChERS (quick, easy, cheap, effective, rugged and safe) approach for the determination of 14 organochlorine pesticide (OCP) residues in strawberry jam by concurrent use of gas chromatography (GC) coupled to electron capture detector (ECD) and GC tandem mass spectrometry (GC-MS/MS). Three versions were tested based on the original QuEChERS method. The results were good (overall average of 89% recoveries with 15% RSD) using the ultrasonic bath at five spiked levels. Performance characteristics, such as accuracy, precision, linear range, limits of detection (LOD) and quantification (LOQ), were determined for each pesticide. LOD ranged from 0.8 to 8.9 microg kg(-1); LOQ was in the range of 2.5-29.8 microg kg(-1); and calibration curves were linear (r(2)>0.9970) in the whole range of the explored concentrations (5-100 microg kg(-1)). The LODs of these pesticides were much lower than the maximum residue levels (MRLs) allowed in Europe for strawberries. The method was successfully applied to the quantification of OCP in commercially available jams. The OCPs were detected lower than the LOD. FAU - Fernandes, V C AU - Fernandes VC AD - REQUIMTE, Instituto Superior de Engenharia, Instituto Politecnico do Porto, Rua Dr degrees Antonio Bernardino de Almeida, 431, P-4200-072 Porto, Portugal. FAU - Domingues, V F AU - Domingues VF FAU - Mateus, N AU - Mateus N FAU - Delerue-Matos, C AU - Delerue-Matos C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study DEP - 20120509 PL - England TA - Food Addit Contam Part A Chem Anal Control Expo Risk Assess JT - Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment JID - 101485040 RN - 0 (Hydrocarbons, Chlorinated) RN - 0 (Pesticides) SB - IM MH - Chromatography, Gas/*methods MH - Fragaria/*chemistry MH - Hydrocarbons, Chlorinated/*analysis MH - Limit of Detection MH - Mass Spectrometry/*methods MH - Pesticides/*analysis MH - Reference Standards MH - Reproducibility of Results EDAT- 2012/05/11 06:00 MHDA- 2012/09/27 06:00 CRDT- 2012/05/11 06:00 PHST- 2012/05/11 06:00 [entrez] PHST- 2012/05/11 06:00 [pubmed] PHST- 2012/09/27 06:00 [medline] AID - 10.1080/19440049.2012.682319 [doi] PST - ppublish SO - Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2012;29(7):1074-84. doi: 10.1080/19440049.2012.682319. Epub 2012 May 9.