Organochlorine Pesticide Residues in Strawberries from Integrated Pest Management and Organic Farming

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Virginia C Fernandes (Author) Other; Valentina F Domingues (Author) Other; Nuno Mateus (Author) FCUP; Cristina Delerue Matos (Author) Other

Journal

Title: Journal of Agricultural and Food Chemistry

Vol. 59

Pages: 7582-7591

ISSN: 0021-8561

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 55 Citations

Scopus - 53 Citations

Scientific classification

FOS: Agrarian Sciences > Other Agrarian Sciences

Other information

Authenticus ID: P-002-PKM

DOI: 10.1021/jf103899r

Abstract (EN): A rapid, specific, and sensitive method based on the Quick Easy Cheap Effective Rugged and Safe (QuEChERS) method and a cleanup using dispersive solid-phase extraction with MgSO(4), 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 compounds met maximum residue 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 beta-endosulfan were detected above the MRL in OF and IPM. Other OCP (aldrin, o,p'-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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10