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Occurrence and risk assessment of pesticides in a Mediterranean Basin with strong agricultural pressure (Guadiana Basin: Southern of Portugal).
Sci Total Environ. 2021 Nov 10; 794:148703.ST

Abstract

The study aimed to assess the occurrence and the environmental risk of a group of 51 selected pesticides in the Guadiana Basin (a biodiversity hotspot, in the Mediterranean). The most abundant pesticides were bentazone and 2,4-D, while terbuthylazine together with terbutryn constituted the most ubiquitous pesticides. Eighteen out of the 38 pesticides detected are no longer approved in Europe, and 5 of them are included in the list of priority substances. The risk assessment showed that azinphos ethyl, diflufenican, irganol, imidacloprid, and oxadiazon occurred occasionally, but always in concentrations above their respective ecotoxicological threshold value. Contrary, bentazone, terbuthylazine, and terbutryn presented a high risk in most of the sampled locations and periods. The site-specific risk assessment showed a spatial and temporal pattern, with a higher risk occurring mainly in intermittent streams, in the drought period. The presence of pesticides banned from the EU market since 2009 showed the importance of improving the monitoring process, to identify the main sources of pollution and the fate of these emerging compounds. The results showed the need of implementing actions to improve the sustainable use of pesticides in agricultural areas, working with farmers and management entities to reduce the contamination of aquatic ecosystems. Transboundary water governance is also required to solve potential transboundary contamination problems.

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Authors+Show Affiliations

Palma P
Department of Technologies and Applied Sciences, Polytechnic Institute of Beja, Beja, Portugal; ICT, Institute of Earth Sciences, University of Évora, Évora, Portugal. Electronic address: ppalma@ipbeja.pt.
Fialho S
Department of Technologies and Applied Sciences, Polytechnic Institute of Beja, Beja, Portugal.
Lima A
Department of Technologies and Applied Sciences, Polytechnic Institute of Beja, Beja, Portugal.
Catarino A
Department of Technologies and Applied Sciences, Polytechnic Institute of Beja, Beja, Portugal.
Costa MJ
ICT, Institute of Earth Sciences, University of Évora, Évora, Portugal; Science and Technology School, University of Évora, Évora, Portugal; Earth Remote Sensing Laboratory - EaRSLab, University of Évora, Évora, Portugal.
Barbieri MV
Water, Environmental and Food Chemistry Unit (ENFOCHEM), Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain.
Monllor-Alcaraz LS
Water, Environmental and Food Chemistry Unit (ENFOCHEM), Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain.
Postigo C
Water, Environmental and Food Chemistry Unit (ENFOCHEM), Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain.
de Alda ML
Water, Environmental and Food Chemistry Unit (ENFOCHEM), Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain. Electronic address: miren.lopezdealda@idaea.csic.es.

MeSH

EcosystemEnvironmental MonitoringPesticidesPortugalRisk AssessmentRiversWater Pollutants, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

34214808

Citation

Palma, P, et al. "Occurrence and Risk Assessment of Pesticides in a Mediterranean Basin With Strong Agricultural Pressure (Guadiana Basin: Southern of Portugal)." The Science of the Total Environment, vol. 794, 2021, p. 148703.
Palma P, Fialho S, Lima A, et al. Occurrence and risk assessment of pesticides in a Mediterranean Basin with strong agricultural pressure (Guadiana Basin: Southern of Portugal). Sci Total Environ. 2021;794:148703.
Palma, P., Fialho, S., Lima, A., Catarino, A., Costa, M. J., Barbieri, M. V., Monllor-Alcaraz, L. S., Postigo, C., & de Alda, M. L. (2021). Occurrence and risk assessment of pesticides in a Mediterranean Basin with strong agricultural pressure (Guadiana Basin: Southern of Portugal). The Science of the Total Environment, 794, 148703. https://doi.org/10.1016/j.scitotenv.2021.148703
Palma P, et al. Occurrence and Risk Assessment of Pesticides in a Mediterranean Basin With Strong Agricultural Pressure (Guadiana Basin: Southern of Portugal). Sci Total Environ. 2021 Nov 10;794:148703. PubMed PMID: 34214808.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Occurrence and risk assessment of pesticides in a Mediterranean Basin with strong agricultural pressure (Guadiana Basin: Southern of Portugal). AU - Palma,P, AU - Fialho,S, AU - Lima,A, AU - Catarino,A, AU - Costa,M J, AU - Barbieri,M V, AU - Monllor-Alcaraz,L S, AU - Postigo,C, AU - de Alda,M Lopez, Y1 - 2021/06/28/ PY - 2021/04/27/received PY - 2021/06/21/revised PY - 2021/06/22/accepted PY - 2021/7/3/pubmed PY - 2021/9/7/medline PY - 2021/7/2/entrez KW - Environmental risk assessment KW - Plant protection products KW - Risk maps KW - Water pollution SP - 148703 EP - 148703 JF - The Science of the total environment JO - Sci Total Environ VL - 794 N2 - The study aimed to assess the occurrence and the environmental risk of a group of 51 selected pesticides in the Guadiana Basin (a biodiversity hotspot, in the Mediterranean). The most abundant pesticides were bentazone and 2,4-D, while terbuthylazine together with terbutryn constituted the most ubiquitous pesticides. Eighteen out of the 38 pesticides detected are no longer approved in Europe, and 5 of them are included in the list of priority substances. The risk assessment showed that azinphos ethyl, diflufenican, irganol, imidacloprid, and oxadiazon occurred occasionally, but always in concentrations above their respective ecotoxicological threshold value. Contrary, bentazone, terbuthylazine, and terbutryn presented a high risk in most of the sampled locations and periods. The site-specific risk assessment showed a spatial and temporal pattern, with a higher risk occurring mainly in intermittent streams, in the drought period. The presence of pesticides banned from the EU market since 2009 showed the importance of improving the monitoring process, to identify the main sources of pollution and the fate of these emerging compounds. The results showed the need of implementing actions to improve the sustainable use of pesticides in agricultural areas, working with farmers and management entities to reduce the contamination of aquatic ecosystems. Transboundary water governance is also required to solve potential transboundary contamination problems. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/34214808/Occurrence_and_risk_assessment_of_pesticides_in_a_Mediterranean_Basin_with_strong_agricultural_pressure__Guadiana_Basin:_Southern_of_Portugal__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(21)03775-X DB - PRIME DP - Unbound Medicine ER -