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Occurrence and potential risk of currently used pesticides in sediments of the Alqueva reservoir (Guadiana Basin).
Environ Sci Pollut Res Int. 2015 May; 22(10):7665-75.ES

Abstract

The evaluation of sediments, concerning to pesticides, constitutes an important step for the understanding of the principal sources of contamination of the surface water. Hence, the purpose of this study was to evaluate for the first time the occurrence, distribution and risk of pesticides in sediments of the Alqueva reservoir, the largest reservoir in the Europe. For this purpose, the occurrence of 22 pesticides and some of their degradation products was determined in surficial sediments of the Alqueva reservoir. To assess the potential risk on ecosystem, the measured concentrations of pesticides were compared with regulatory and toxicological benchmarks. Of the 22 pesticides analysed, only 8 were detected. Diuron was the pesticide detected in greater concentration, followed by terbuthylazine and chlortoluron. The sediments most polluted by pesticides were from Lucefécit, constituted totally by fine particles (<0.063 mm) and with high values of organic matter, and are located nearby large agricultural fields. The risk assessment allowed us to conclude that the sediments from the Alqueva reservoir presented low risk, concerning to pesticides, for the various communities that integrate the aquatic ecosystems. However, some of the compounds detected present a high potential for bioaccumulation that may lead to their bioamplification in the trophic chain, reaching concentrations higher than their acceptable daily intake, putting, in this way the populations at risk.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Palma P
Departamento de Tecnologias e Ciências Aplicadas; Escola Superior Agrária, Instituto Politécnico de Beja, Rua Pedro Soares S/N, Apartado 6155, 7800-295, Beja, Portugal, ppalma@ipbeja.pt.
Köck-Schulmeyer M
No affiliation info available
Alvarenga P
No affiliation info available
Ledo L
No affiliation info available
de Alda ML
No affiliation info available
Barceló D
No affiliation info available

MeSH

EcosystemEnvironmental MonitoringEuropeGeologic SedimentsPesticidesRisk AssessmentWater Pollutants, ChemicalWater Pollution, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

25874427

Citation

Palma, P, et al. "Occurrence and Potential Risk of Currently Used Pesticides in Sediments of the Alqueva Reservoir (Guadiana Basin)." Environmental Science and Pollution Research International, vol. 22, no. 10, 2015, pp. 7665-75.
Palma P, Köck-Schulmeyer M, Alvarenga P, et al. Occurrence and potential risk of currently used pesticides in sediments of the Alqueva reservoir (Guadiana Basin). Environ Sci Pollut Res Int. 2015;22(10):7665-75.
Palma, P., Köck-Schulmeyer, M., Alvarenga, P., Ledo, L., de Alda, M. L., & Barceló, D. (2015). Occurrence and potential risk of currently used pesticides in sediments of the Alqueva reservoir (Guadiana Basin). Environmental Science and Pollution Research International, 22(10), 7665-75. https://doi.org/10.1007/s11356-015-4390-1
Palma P, et al. Occurrence and Potential Risk of Currently Used Pesticides in Sediments of the Alqueva Reservoir (Guadiana Basin). Environ Sci Pollut Res Int. 2015;22(10):7665-75. PubMed PMID: 25874427.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Occurrence and potential risk of currently used pesticides in sediments of the Alqueva reservoir (Guadiana Basin). AU - Palma,P, AU - Köck-Schulmeyer,M, AU - Alvarenga,P, AU - Ledo,L, AU - de Alda,M López, AU - Barceló,D, Y1 - 2015/04/01/ PY - 2014/07/10/received PY - 2015/03/17/accepted PY - 2015/4/16/entrez PY - 2015/4/16/pubmed PY - 2015/8/13/medline SP - 7665 EP - 75 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 22 IS - 10 N2 - The evaluation of sediments, concerning to pesticides, constitutes an important step for the understanding of the principal sources of contamination of the surface water. Hence, the purpose of this study was to evaluate for the first time the occurrence, distribution and risk of pesticides in sediments of the Alqueva reservoir, the largest reservoir in the Europe. For this purpose, the occurrence of 22 pesticides and some of their degradation products was determined in surficial sediments of the Alqueva reservoir. To assess the potential risk on ecosystem, the measured concentrations of pesticides were compared with regulatory and toxicological benchmarks. Of the 22 pesticides analysed, only 8 were detected. Diuron was the pesticide detected in greater concentration, followed by terbuthylazine and chlortoluron. The sediments most polluted by pesticides were from Lucefécit, constituted totally by fine particles (<0.063 mm) and with high values of organic matter, and are located nearby large agricultural fields. The risk assessment allowed us to conclude that the sediments from the Alqueva reservoir presented low risk, concerning to pesticides, for the various communities that integrate the aquatic ecosystems. However, some of the compounds detected present a high potential for bioaccumulation that may lead to their bioamplification in the trophic chain, reaching concentrations higher than their acceptable daily intake, putting, in this way the populations at risk. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/25874427/Occurrence_and_potential_risk_of_currently_used_pesticides_in_sediments_of_the_Alqueva_reservoir__Guadiana_Basin__ DB - PRIME DP - Unbound Medicine ER -