21 research outputs found
Organochlorine Pesticide Residues in Strawberries from Integrated Pest Management and Organic Farming
Pesticide residues in Portuguese strawberries grown in 2009â2010 using integrated pest management and organic farming
Validation of a microwave-assisted extraction gas chromatography detection method for the determination of fungicides in grapes
The development and optimization of a modified single-drop microextraction method for organochlorine pesticides determination by gas chromatography-tandem mass spectrometry
Determination of residual levels of metrafenone in lettuce grown under greenhouse conditions using gas chromatography with a micro-electron capture detector
Simultaneous determination of deltamethrin, permethrin and malathion in stored wheat samples using continuous sample drop flow microextraction followed by HPLCâUV
Hexachlorocyclohexane derivatives in industrial waste and samples from a contaminated riverine system
Optimization of Fluidized-Bed Extraction for Determination of Organochlorine Pesticides in Sediment
Organochlorine pesticide residues in strawberries from integrated pest management and organic farming
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 ÎČ-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