Survey of organophosphorus pesticide residues in virgin olive oils produced in Chile
Author
dc.contributor.author
Fuentes, Edwar
Author
dc.contributor.author
Báez, María E.
Author
dc.contributor.author
Díaz, Juan
Admission date
dc.date.accessioned
2018-12-20T15:04:03Z
Available date
dc.date.available
2018-12-20T15:04:03Z
Publication date
dc.date.issued
2010
Cita de ítem
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Food Additives and Contaminants: Part B Surveillance, Volumen 3, Issue 2, 2018, Pages 101-107
Identifier
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19393210
Identifier
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19393229
Identifier
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10.1080/19440041003793280
Identifier
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https://repositorio.uchile.cl/handle/2250/157431
Abstract
dc.description.abstract
Dimethoate, diazinon, parathion methyl, pirimiphos methyl, malathion, fenthion, chlorpyriphos, methidathion and azinphos methyl were determined in 71 olive oil samples produced in Chile from different varieties of olives (arbequina, frantoio, picual, lechino and blend) at three different harvest periods (2007, 2008 and 2009). The target pesticides were determined using a validated analytical method based on microwave-assisted liquid-liquid and solid-phase extraction with subsequent GC-FPD detection and GC-MS/MS for confirmation purposes. In 79% of the samples, five of the nine pesticides tested were detected with a frequency of one pesticide per sample. The highest detection rates were observed for the residues of chlorpyriphos and diazinon. The average concentration of chlorpyriphos, diazinon, azinphos methyl and methidathion were 0.084, 0.057, 0.024 and 0.010 μg g-1, respectively. Higher contents of organophosphorus pesticides (OPPs) were found in regions where intensive agriculture