Monitoring pesticide residues in greenhouse tomato by combining acetonitrile-based extraction with dispersive liquid–liquid microextraction followed by gas-chromatography–mass spectrometry

Melo, Armindo; Cunha, Sara C.; Mansilha, Catarina; Aguiar, Ana; Pinho, Olı́via

doi:10.1016/j.foodchem.2012.05.112

Cited by 75 publications

(33 citation statements)

References 22 publications

(29 reference statements)

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“…Although the comparison of studies with different sampling may be inaccurate, comparing the results obtained in this study with those found in tomato samples in other countries, we observed that pesticide residues in positive samples of tomatoes marketed in Brazil show higher values than in Portugal where 24 of the 30 pesticides under study were not detected in any of the 20 sample analyzed (Melo et al, 2012). In a study conducted in Turkey, pesticide residues were below the LOD in tomato samples (Sungur & Tunur, 2012), and in Spain, QuEChERS method has been applied to 59 real samples in different kinds of fruits and vegetables, including tomato.…”

Section: Application Of Real Samplessupporting

confidence: 50%

Liquid chromatography–electrospray ionization tandem mass spectrometry and dynamic multiple reaction monitoring method for determining multiple pesticide residues in tomato

Andrade¹,

Monteiro

Francisco³

et al. 2015

Food Chemistry

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Section: Application Of Real Samplessupporting

confidence: 50%

Liquid chromatography–electrospray ionization tandem mass spectrometry and dynamic multiple reaction monitoring method for determining multiple pesticide residues in tomato

Andrade¹,

Monteiro

Francisco³

et al. 2015

Food Chemistry

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“…Los porcentajes de recuperación superiores al 100 % y las diferencias obtenidas en distintas investigaciones, podrían entre otras cosas ser atribuibles al denominado efecto matriz (35). La mayoría de trabajos en tomate ha considerado que dicho efecto está relacionado con el porcentaje de recuperación de los residuos analizados (33,44). En este trabajo, δ-BHC y clorpirifos presentaron porcentajes de recuperación y desviación muy elevados, 188% ± 13 y 210% ± 39, respectivamente.…”

Section: Implementación Del Métodounclassified

“…Aparentemente, todas las muestras poseen concentraciones de residuos de plaguicidas entre los límites permitidos según la CA (14,44). Pero, según la CE el grupo endosulfán (endosulfán I, endosulfán II, endosulfán sulfato) y el metoxicloro superaron los límites máximos residuales establecidos en el 14,7% y el 100% de las muestras, respectivamente.…”

Section: Muestreounclassified

RESIDUOS DE PLAGUICIDAS EN TOMATE (Solanum lycopersicum) COMERCIALIZADO EN ARMENIA, COLOMBIA

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et al. 2017

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Background: Tomato variety "chonto" (Solanum lycopersicum) is a common ingredient in Colombian cuisine. This fruit is commonly attacked for pests that generates losses higher than 30 %. The profuse crop dusting produces a risk for the consumers, for that reason The Colombian Agriculture Institute (ICA) limit the use of agrochemicals. However, the marketed tomato contains traces of endosulfán and 4,4'-DDT that are regulated and prohibited in many countries, including Colombia. Tomato quality is stablished according to the Codex Alimentarius recommendations for pesticides, which studies require sensible, selective and probed methods of analysis. Objectives: To report about the estimated average daily intake (EADI) for pesticides residues in the region. In the present work the QuEChERS methodology was modified and validated, based on the EN15662 procedure for the analysis of the organochlorines and organophosphorus pesticides residues in tomato. Methods: The procedure EN15662 was implemented and validated by means of analytical figures of merit from the calibration curve, accuracy analysis and the Youden-Steiner robustness test, for the simultaneous analysis of organochlorines and organophosphorus pesticides using gas chromatography with micro electron capture detector (GC-µECD) in commercialized tomato samples from an organic store Fruver (marketing of vegetables, fresh fruit and vegetables) and 14 grocery stores, for a total of 16 sample points in Armenia. The EADI was estimated for pesticides residues found. Results: A total of 26 residues of pesticides, 20 organochlorines and 6 organophosphorus were analyzed. In mean level of concentration of the calibration curves, recovery was in the range from 82% ± 5 to 136% ± 15 to 17 organochlorines, and in the range from 64% ± 9 to 96% ± 15 to 5 organophosphorus. Other pesticide residues were outside this range of recovery. Detection limits between 0,5 and 257 µg/L and quantification limits between 1,4 and 779 µg/L for aldrin and diazinon, respectively. Conclusions: The methodology used in our studies proves its robustness for the analysis of pesticides. 4,4'-DDT, endosulfán y metoxicloro were found in the majority of samples analyzed, although they are prohibited in Colombia.

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“…The determination of OPs in fruits, vegetables and water using GC with either electron capture (ECD) (Kin and Huat, 2009), flame photometric (FPD) (Yu et al, 2004;Pappas and Kyriakidis, 2003;Liu et al, 2013;Ahmadi et al, 2006;Khalili-Zanjani et al, 2008;Berijani et al, 2006), nitrogen phosphorus (NPD) (Wang et al, 2008) or mass spectrometry (MS) (Nguyen et al, 2008;Melo et al, 2012) detectors has been reported.…”

Section: Introductionmentioning

confidence: 99%

Determination of organophosphorus pesticide residues in vegetables using solid phase micro-extraction coupled with gas chromatography–flame photometric detector

Sapahin

Makahleh

Saad

2019

Arabian Journal of Chemistry

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An adequate and simple analytical method based on solid-phase microextraction (SPME) followed by gas chromatography-flame photometric detection (GC-FPD) for the determination of eleven organophosphorus pesticide residues (i.e., ethoprophos, sulfotep, diazinon, tolclofos-methyl, fenitrothion, chlorpyrifos, isofenphos, methidathion, ethion, triazophos, leptophos) in vegetables samples (cabbage, kale and mustard) was developed. Important parameters that influence the extraction efficiency (i.e., fibre type, extraction modes, extraction time, salt addition, desorption time and temperature) were systematically investigated. Four types of commercially available fibres (i.e., 50/30 lm divinylbenzene/carboxen/polydimethylsiloxane (DVB/CAR/PDMS), 65 lm polydimethylsiloxane/divinylbenzene (PDMS/DVB), 100 lm polydimethylsiloxane (PDMS), and 85 lm polyacrylate (PA)) were evaluated. PA fibre exhibited the best performance and was used for the rest of the studies. The optimised extraction conditions were: extraction time, 30 min at room temperature; stirring speed, 1275 rpm; salt content, 10% NaCl; desorption time and temperature, 11 min at 260°C; and no pH adjustment of the sample extract. The method was validated over the range 0.1-100 lg/L. Repeatabilities were satisfactory, ranging between 2.44% and 17.9% for all analytes. The limits of detection and quantitation ranged from 0.01 to 0.14 and 0.03 to 0.42 lg/L, respectively. The method was applied to twenty local vegetable (cabbage, kale * Corresponding authors.

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Monitoring pesticide residues in greenhouse tomato by combining acetonitrile-based extraction with dispersive liquid–liquid microextraction followed by gas-chromatography–mass spectrometry

Cited by 75 publications

References 22 publications

Liquid chromatography–electrospray ionization tandem mass spectrometry and dynamic multiple reaction monitoring method for determining multiple pesticide residues in tomato

Liquid chromatography–electrospray ionization tandem mass spectrometry and dynamic multiple reaction monitoring method for determining multiple pesticide residues in tomato

RESIDUOS DE PLAGUICIDAS EN TOMATE (Solanum lycopersicum) COMERCIALIZADO EN ARMENIA, COLOMBIA

Determination of organophosphorus pesticide residues in vegetables using solid phase micro-extraction coupled with gas chromatography–flame photometric detector

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