Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/2035
Título: Analysing organochlorine pesticides in strawberry jams using GC-ECD, GC-MS/MS and QuEChERS sample preparation
Autor: Fernandes, Virgínia C.
Domingues, Valentina F.
Mateus, Nuno
Delerue-Matos, Cristina
Palavras-chave: Chromatography – GC
Extraction
GC/MS
Pesticides – organochlorine
Pesticide residues
Processed foods
Organic foods
Cooked foods
Fruit
Data: 2012
Editora: Taylor & Francis
Relatório da Série N.º: Food Additives & Contaminants: Part A; Vol. 29, Issue 7
Resumo: 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 (r2>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.
Peer review: yes
URI: http://hdl.handle.net/10400.22/2035
ISSN: 1944–0049
Versão do Editor: http://www.tandfonline.com/doi/abs/10.1080/19440049.2012.682319#.UkWYMX-F0jJ
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