Persistence of Methamidophos, Diazinon, and Malathion in Tomatoes

Prieto, Avismelsi; Molero, D.; González, G.; Buscema, I.; Ettiene, G.; Medina, D.

doi:10.1007/s00128-002-0087-5

Cited by 13 publications

(13 citation statements)

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“…Samples were collected at 0, 1,2,4,7,11,15,20,26 and 32 days after the final spraying (early fruit ripening). In order to achieve an accurate statistical analysis, 10 grape clusters were collected for each sample from the grapevines in a randomized X pattern.…”

Section: Sampling Proceduresmentioning

confidence: 99%

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Diazinon residues and degradation kinetics for grapes under field conditions

Torabi

Talebi

2013

Journal of Environmental Science and Health, Part B

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The dissipation of diazinon (O,O-diethyl O-2-isopropyl-6-methylpyrimidin-4-yl phosphorothioate) in grapes was investigated to determine its pre-harvest interval (PHI). Diazinon was applied to grapes at the recommended dosage (0.9 g a.i. L(-1)) and twice the recommended dosage (1.8 g a.i. L(-1)) three times, at the fruit formation stage, the sour stage, and the ripening stage, in a field trial with three replications. Samples were taken at 0, 1, 2, 4, 7, 11, 15, 20, 26 and 32 days after spraying. The residue was extracted using a water/methanol/acetonitrile (1:1:1, v/v/v) solvent and solid phase extraction was employed for cleanup. Quantitative analysis was performed using a gas chromatograph equipped with a nitrogen-phosphorus detector. The dissipation trend for the recommended dosage and twice the recommend dosage followed the simple first-order kinetic model (SFOK) (DT(50) = 3.29 days, DT(90) = 11 days, PHI = 13.5 days) and first-order double-exponential decay (FODED) model (DT(50) = 1.08 days, DT(90) = 5.82 days, PHI = 15.29 days), respectively. The average initial deposit of diazinon at the recommended dosage was 9.04 mg kg(-1)and for twice the recommended dosage was 27.38 mg kg(-1)and it dissipated rapidly within days of spraying.

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Section: Sampling Proceduresmentioning

confidence: 99%

“…[1][2] Determining the proper pre-harvest interval (PHI) for application can help reduce diazinon residue in grapes. [3][4] Studies on pesticide residues in Iran have focused on monitoring [5][6][7][8] and dissipation behavior in vegetables such as cucumbers, melons and tomatoes.…”

Section: Introductionmentioning

confidence: 99%

Diazinon residues and degradation kinetics for grapes under field conditions

Torabi

Talebi

2013

Journal of Environmental Science and Health, Part B

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“…The pesticide extraction was performed modifying the method reported by Prieto et al (2002), without centrifugation of the matrix with the solvent and the cleanup of the extract. A representative sample (200.0 g) was chopped in a food processor.…”

Section: Methodsmentioning

confidence: 99%

“…Pesticide organophosphorus residue monitoring studies have been reported in fruits and vegetables (Kumari et al 2006;Mukherjee 2003). In Venezuela, the researches about these pesticides are few (Ettiene et al 2006;Prieto et al 2002). Pesticides in vegetables cultivated in José María Vargas County were studied for the first time.…”

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confidence: 99%

Monitoring of Organophosphorus Pesticide Residues in Vegetables of Agricultural Area in Venezuela

Quintero

Caselles

Ettiene

et al. 2008

Bull Environ Contam Toxicol

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The purpose of this study was to determine the residues of seven pesticides organophosphorus (methamidophos, diazinon, chlorpyriphos, parathion-methyl, dimethoate, malathion and tetrachlorvinphos), in some vegetables like: potato, lettuce, tomato, onion, red pepper and green onion cultivated in José María Vargas County in Táchira State, Venezuela. The research permitted to detect that 48.0% of the samples were contaminated with some of the pesticides studied. Methamidophos was founded in the vegetables in the rank of 6.3%-65.5%. The results show that 16.7% of the samples tested have residues higher than the maximum limits permitted.

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“…Es altamente tóxico para el hombre por vía oral, dérmica y por inhalación (Sosa-Gomez et al, 2001;Evaristo y Baptista, 2002;He et al, 2002;Bouchard et al, 2006). Es un insecticida de amplio espectro para el control de plagas agrícolas que atacan a cultivos como el maíz, papa, brócoli, vid y algodón (Prieto et al, 2002;White et al, 2006). Es uno de los plaguicidas más empleados en la agricultura peruana y del neotrópico, bajo diferentes formulaciones (Iannacone et al, 2002a;Stoorvogel et al, 2003;Recena et al, 2006).…”

Section: Introductionunclassified

Evaluación del Riego Ambiental del Insecticida Metamidofos en Bioensayos con Cuatro Organismos Acuáticos no Destinatarios

Iannacone

et al. 2007

Agric. Téc.

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Persistence of Methamidophos, Diazinon, and Malathion in Tomatoes

Cited by 13 publications

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Diazinon residues and degradation kinetics for grapes under field conditions

Diazinon residues and degradation kinetics for grapes under field conditions

Monitoring of Organophosphorus Pesticide Residues in Vegetables of Agricultural Area in Venezuela

Evaluación del Riego Ambiental del Insecticida Metamidofos en Bioensayos con Cuatro Organismos Acuáticos no Destinatarios

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