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Distribution of pesticides and PCBs in sediments of agricultural drains in the Culiacan Valley, Sinaloa, Mexico.
García-de la Parra, Luz María; Cervantes-Mojica, L Juleny; González-Valdivia, Carolina; Martínez-Cordero, Francisco J; Aguilar-Zárate, Gabriela; Bastidas-Bastidas, Pedro; Betancourt-Lozano, Miguel.
Afiliación
  • García-de la Parra LM; Unidad Mazatlan, Centro de Investigacion en Alimentacion y Desarrollo, Av. Sabalo Cerritos s/n, 82010 Mazatlán, SIN, Mexico.
Arch Environ Contam Toxicol ; 63(3): 323-36, 2012 Oct.
Article en En | MEDLINE | ID: mdl-22811371
Agriculture is one of the most important economic activities in Sinaloa, Mexico. The Culiacan Valley is an extensive agricultural region characterized by a variety of crops with high-yield productions. In this study, concentrations of organochlorine (OCPs) and organophosphorus (OPs) pesticides and polychlorobiphenyls (PCBs) were determined in sediments of the agricultural drainage system of Culiacan Valley. Overall, 32 compounds were detected, with concentrations widely ranging from 0.03 to 1 294 ng g(-1) dry weight. OCP concentrations (15) ranged from 0.1 to 20.19 ng g(-1) dw. OP concentrations (8) ranged from 0.03 to 1294 ng g(-1) dw, and diazinon was the compound with the highest concentration. PCB concentrations were also determined and varied from 0.05 to 3.29 ng g(-1) dw. Other compounds detected included permethrin, triadimefon, and fipronil. The central zone registered the higher concentrations and the greatest number of compounds, which could be related to the occurrence of horticultural fields in this zone. According to sediment quality guidelines, the compounds exceeding the probable effect level were γ-HCH, p,p'-DDT and p,p'-DDE, while the pesticides above the maximum permissible concentration were endosulfan, azinphos methyl, diazinon, dichlorvos, and permethrin. Although Sinaloa is an important agricultural crop producer in northwest Mexico, there are not many studies dealing with pesticide distribution in agricultural areas.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Plaguicidas / Contaminantes Químicos del Agua / Bifenilos Policlorados / Sedimentos Geológicos / Riego Agrícola País/Región como asunto: Mexico Idioma: En Revista: Arch Environ Contam Toxicol Año: 2012 Tipo del documento: Article País de afiliación: México Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Plaguicidas / Contaminantes Químicos del Agua / Bifenilos Policlorados / Sedimentos Geológicos / Riego Agrícola País/Región como asunto: Mexico Idioma: En Revista: Arch Environ Contam Toxicol Año: 2012 Tipo del documento: Article País de afiliación: México Pais de publicación: Estados Unidos