Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio- temporal analysis and ecological risk assessment

This study provides a description of the water quality status in the tributaries of the upper Tagus River and a preliminary risk assessment for freshwater organisms. A wide range of physico-chemical parameters, nutrients, metals and organic contaminants (20 pesticides, and 32 point source chemicals,...

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Autores: Arenas Sánchez, Alba, Rico, Andreu, Rivas Tabares, David Andrés, Blanco González, Alberto, García Doncel, Patricia, Romero Salas, Amaya, Nozal Martínez, Leonor|||0000-0001-7945-669X, Vighi, Marco
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad de Alcalá (UAH)
Repositorio:e_Buah Biblioteca Digital Universidad de Alcalá
Idioma:inglés
OAI Identifier:oai:ebuah.uah.es:10017/64615
Acceso en línea:http://hdl.handle.net/10017/64615
https://dx.doi.org/10.1016/j.scitotenv.2019.02.286
Access Level:acceso abierto
Palabra clave:Toxic units
Mixture toxicity
Rivers
Water quality
Water Framework Directive
Geología
Geology
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spelling Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio- temporal analysis and ecological risk assessmentArenas Sánchez, AlbaRico, AndreuRivas Tabares, David AndrésBlanco González, AlbertoGarcía Doncel, PatriciaRomero Salas, AmayaNozal Martínez, Leonor|||0000-0001-7945-669XVighi, MarcoToxic unitsMixture toxicityRiversWater qualityWater Framework DirectiveGeologíaGeologyThis study provides a description of the water quality status in the tributaries of the upper Tagus River and a preliminary risk assessment for freshwater organisms. A wide range of physico-chemical parameters, nutrients, metals and organic contaminants (20 pesticides, and 32 point source chemicals, mainly pharmaceuticals) were monitored during spring, summer and autumn of 2016. Monitoring of organic contaminants was performed using conventional grab sampling and passive samples (POCIS). The variation of the different groups of parameters as regards to land use and sampling season was investigated. The prioritization of organic and inorganic contaminants was based on the toxic unit (TU) approach, using toxicity data for algae, invertebrates and fish. Finally, the compliance with the Environmental Quality Standards (EQS) set as part of the Water Framework Directive (WFD) was evaluated for the listed substances. This study shows that the land use characteristics had a large influence on the spatial distribution of the contaminants and other water quality parameters, while temporal trends were only significant for physico-chemical parameters, and marginally significant for insecticides. Acute toxicity is likely to occur for some metals (copper and zinc) in the most impacted sites (TU values close to or above 1). Low acute toxicity was determined for organic contaminants (individual compounds and mixtures) on the basis of grab samples. However, the assessment performed with POCIS samples identified diuron, chlorpyrifos and imidacloprid as potentially hazardous compounds. Several contaminant mixtures that may cause chronic toxicity and that should be considered in future regional chemical monitoring plans were identified. Our study also shows that some metals and pesticides exceeded the WFD regulatory thresholds and that only 30% of the sampled sites had a good chemical status. Further research is needed to identify chemical emission sources and to design proper abatement options in the Tagus river basin.Ministerio de Economía y Competitividad20192019-06-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10017/64615https://dx.doi.org/10.1016/j.scitotenv.2019.02.286reponame:e_Buah Biblioteca Digital Universidad de Alcaláinstname:Universidad de Alcalá (UAH)InglésengMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Not available FJCI-2015-27190 FJCI-2015-27190open accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ebuah.uah.es:10017/646152026-06-18T11:13:07Z
dc.title.none.fl_str_mv Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio- temporal analysis and ecological risk assessment
title Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio- temporal analysis and ecological risk assessment
spellingShingle Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio- temporal analysis and ecological risk assessment
Arenas Sánchez, Alba
Toxic units
Mixture toxicity
Rivers
Water quality
Water Framework Directive
Geología
Geology
title_short Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio- temporal analysis and ecological risk assessment
title_full Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio- temporal analysis and ecological risk assessment
title_fullStr Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio- temporal analysis and ecological risk assessment
title_full_unstemmed Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio- temporal analysis and ecological risk assessment
title_sort Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio- temporal analysis and ecological risk assessment
dc.creator.none.fl_str_mv Arenas Sánchez, Alba
Rico, Andreu
Rivas Tabares, David Andrés
Blanco González, Alberto
García Doncel, Patricia
Romero Salas, Amaya
Nozal Martínez, Leonor|||0000-0001-7945-669X
Vighi, Marco
author Arenas Sánchez, Alba
author_facet Arenas Sánchez, Alba
Rico, Andreu
Rivas Tabares, David Andrés
Blanco González, Alberto
García Doncel, Patricia
Romero Salas, Amaya
Nozal Martínez, Leonor|||0000-0001-7945-669X
Vighi, Marco
author_role author
author2 Rico, Andreu
Rivas Tabares, David Andrés
Blanco González, Alberto
García Doncel, Patricia
Romero Salas, Amaya
Nozal Martínez, Leonor|||0000-0001-7945-669X
Vighi, Marco
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Toxic units
Mixture toxicity
Rivers
Water quality
Water Framework Directive
Geología
Geology
topic Toxic units
Mixture toxicity
Rivers
Water quality
Water Framework Directive
Geología
Geology
description This study provides a description of the water quality status in the tributaries of the upper Tagus River and a preliminary risk assessment for freshwater organisms. A wide range of physico-chemical parameters, nutrients, metals and organic contaminants (20 pesticides, and 32 point source chemicals, mainly pharmaceuticals) were monitored during spring, summer and autumn of 2016. Monitoring of organic contaminants was performed using conventional grab sampling and passive samples (POCIS). The variation of the different groups of parameters as regards to land use and sampling season was investigated. The prioritization of organic and inorganic contaminants was based on the toxic unit (TU) approach, using toxicity data for algae, invertebrates and fish. Finally, the compliance with the Environmental Quality Standards (EQS) set as part of the Water Framework Directive (WFD) was evaluated for the listed substances. This study shows that the land use characteristics had a large influence on the spatial distribution of the contaminants and other water quality parameters, while temporal trends were only significant for physico-chemical parameters, and marginally significant for insecticides. Acute toxicity is likely to occur for some metals (copper and zinc) in the most impacted sites (TU values close to or above 1). Low acute toxicity was determined for organic contaminants (individual compounds and mixtures) on the basis of grab samples. However, the assessment performed with POCIS samples identified diuron, chlorpyrifos and imidacloprid as potentially hazardous compounds. Several contaminant mixtures that may cause chronic toxicity and that should be considered in future regional chemical monitoring plans were identified. Our study also shows that some metals and pesticides exceeded the WFD regulatory thresholds and that only 30% of the sampled sites had a good chemical status. Further research is needed to identify chemical emission sources and to design proper abatement options in the Tagus river basin.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-06-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10017/64615
https://dx.doi.org/10.1016/j.scitotenv.2019.02.286
url http://hdl.handle.net/10017/64615
https://dx.doi.org/10.1016/j.scitotenv.2019.02.286
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Not available FJCI-2015-27190 FJCI-2015-27190
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:e_Buah Biblioteca Digital Universidad de Alcalá
instname:Universidad de Alcalá (UAH)
instname_str Universidad de Alcalá (UAH)
reponame_str e_Buah Biblioteca Digital Universidad de Alcalá
collection e_Buah Biblioteca Digital Universidad de Alcalá
repository.name.fl_str_mv
repository.mail.fl_str_mv
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