Please use this identifier to cite or link to this item: http://dspace.azti.es/handle/24689/1259
Files in This Item:
There are no files associated with this item.
Title: Contaminants of emerging concern in the Basque coast (N Spain): Occurrence and risk assessment for a better monitoring and management decisions
Authors: Solaun, Oihana; German Rodriguez, Jose; Menchaca, Iratxe and Lopez-Garcia, Ester; Martinez, Elena; Zonja, Bozo; Postigo, Cristina; Lopez de Alda, Miren; Barcelo, Damia; Borja, Angel and Manzanos, Alberto; Larreta, Joana
Abstract: The study of the presence in the aquatic environment of certain substances considered as contaminants of emerging concern (CEC) is a preliminary step to the analysis of the possible harmful effects on aquatic ecosystems and the establishment of the corresponding environmental quality standards. In order to monitor the occurrence of CECs in the aquatic environment, the European Commission established in 2015 and 2018 two watch-list of substances for Union-wide monitoring in the field of water policy (Decision (EU) 2015/495 and Decision (EU) 2018/ 840). In the coast of the Basque Country, southeast of the Bay of Biscay, 19 of these watch list substances were monitored quarterly from May 2017 to March 2019. Water samples were collected at the effluent of three wastewater treatment plants and five control points associated with receiving waters (transitional and coastal water bodies). The most frequently quantified substances were azithromycin (91\%), imidacloprid (82\%), clarithromycin (80\%), diclofenac (78\%) and erythromycin (73\%), with frequencies of quantification higher in wastewaters (83-100\%) than in receiving waters (70-85\%). In general, concentrations in wastewater were also higher than in receiving waters, indicating a dilution effect in the environment. In receiving waters, six out of the nineteen substances monitored exceeded their respective Predicted No-Effect Concentrations: azithromycin (34\%), imidacloprid (9\%), 17 beta-estradiol (E2) (9\%), clarithromycin (7\%), ciprofloxacin (7\%), and diclofenac (5\%); and therefore, their levels could pose an environmental risk. (C) 2020 Elsevier B.V. All rights reserved.
Keywords: EU watch list; Water Framework Directive; Priority substances directive; Wastewater; Receiving water; SOLID-PHASE EXTRACTION; SYNTHETIC PHENOLIC ANTIOXIDANTS; UV-FILTERS; PHARMACEUTICAL COMPOUNDS; ORGANIC MICROPOLLUTANTS; SPATIAL-DISTRIBUTION; WATCH LIST; ENVIRONMENTAL RISK; SURFACE WATERS; REMOVAL
Issue Date: 2021
Publisher: ELSEVIER
Type: Article
Language: 
DOI: 10.1016/j.scitotenv.2020.142765
URI: http://dspace.azti.es/handle/24689/1259
ISSN: 0048-9697
E-ISSN: 1879-1026
Funder: Basque Water Agency (URA) through the project ``Network for monitoring the ecological and chemical status of transitional and coastal waters of the Basque coast��
Generalitat de Catalunya (Consolidate Research Group)Generalitat de Catalunya [2017-SGR-14]
Ministry of Science and Innovation of SpainSpanish Government [CEX2018-000794-S]
Appears in Publication types:Artículos científicos



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.