Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3026
Título: Organochlorine pesticide residues in strawberries from integrated pest management and organic farming
Autor: Fernandes, Virgínia C.
Domingues, Valentina F.
Mateus, Nuno
Delerue-Matos, Cristina
Palavras-chave: Organochlorine pesticides
Gas chromatography
Mass spectrometry
Tandem mass spectrometry
Electron capture detection
Organic farming
Data: 2011
Editora: American Chemical Society Publications
Relatório da Série N.º: Journal of Agricultural and food Chemistry; Vol. 59, Issue 14
Resumo: A rapid, specific, and sensitive method based on theQuick Easy Cheap Effective Rugged and Safe (QuEChERS) method and a cleanup using dispersive solid-phase extraction with MgSO4, PSA, and C18 sorbents has been developed for the routine analysis of 14 pesticides in strawberries. The analyses were performed by three different analytical methodologies: gas chromatography (GC) with electron capture detection (ECD), mass spectrometry (MS), and tandem mass spectrometry (MS/MS). The recoveries for all the pesticides studied were from 46 to 128%, with relative standard deviation of <15% in the concentration range of 0.005-0.250 mg/kg. The limit of detection (LOD) for all compoundsmetmaximumresidue limits (MRL) accepted in Portugal for organochlorine pesticides (OCP). A survey study of strawberries produced in Portugal in the years 2009-2010 obtained from organic farming (OF) and integrated pest management (IPM) was developed. Lindane and β-endosulfan were detected above the MRL in OF and IPM. Other OCP (aldrin, o,p0-DDT and their metabolites, and methoxychlor) were found below the MRL. The OCP residues detected decreased from 2009 to 2010. The QuEChERS method was successfully applied to the analysis of strawberry samples.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3026
ISSN: 0021-8561
Versão do Editor: http://pubs.acs.org/doi/abs/10.1021/jf103899r
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