Ecological risk assessment of pesticides in the Mijares River (eastern Spain) impacted by citrus production using wide-scope screening and target quantitative analysis

 

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Detalles Bibliográficos
Autores: Bijlsma, Lubertus, Pitarch Arquimbau, María Elena, Hernández Hernández, Félix Javier, Fonseca Rubí, Eddie Alexander, Marín Ramos, José Manuel, Ibáñez Martínez, María, Portolés Nicolau, Tania, Rico, Andreu
Formato: artículo original
Fecha de Publicación:2021
Descripción:The widespread use of pesticides, especially in agricultural areas, makes necessary to control their presence in surrounding surface waters. The current study was designed to investigate the occurrence and ecological risks of pesticides and their transformation products in a Mediterranean river basin impacted by citrus agricultural production. Nineteen sites were monitored in three campaigns distributed over three different seasons. After a qualitative screening, 24 compounds was selected for subsequent quantitative analysis. As expected, the lower section of the river was most contaminated, with total concentration >5 µg/L in two sites near to the discharge area of wastewater treatment plants. The highest concentrations were found in September, after agricultural applications and when the river flow is reduced. Ecological risks were calculated using two mixture toxicity approaches (Toxic Unit and multi-substance Potentially Affected Fraction), which revealed high acute and chronic risks of imidacloprid to invertebrates, moderate-to-high risks of diuron, simazine and 2,4-D for primary producers, and moderate-to-high risks of thiabendazole for invertebrates and fish. This study shows that intensive agricultural production and the discharge of wastewater effluents containing pesticide residues from post-harvest citrus processing plants are threatening freshwater biodiversity. Further actions are recommended to control pesticide use and to reduce emissions.
País:Kérwá
Institución:Universidad de Costa Rica
Repositorio:Kérwá
Lenguaje:Inglés
OAI Identifier:oai:kerwa.ucr.ac.cr:10669/84496
Acceso en línea:https://www.sciencedirect.com/science/article/pii/S0304389421002405
https://hdl.handle.net/10669/84496
Palabra clave:Pesticides
Surface water
Chromatography coupled to mass spectrometry
Ecological risk assessment
Mixture toxicity
PRODUCTOS QUIMICOS AGRICOLAS -- ASPECTOS AMBIENTALES
RESIDUOS DE ASPERSION EN AGRICULTURA
CONTAMINACION DEL AGUA