Input of pharmaceuticals through coastal surface watercourses into a Mediterranean lagoon (Mar Menor, SE Spain): Sources and seasonal variations

The seasonal occurrence and distribution of 69 pharmaceuticals along coastal watercourses during 6 sampling campaigns and their input through El Albujon watercourse to the Mar Menor lagoon were determined by UPLC-MS-MS, considering a total of 115 water samples. The major source of pharmaceuticals running into this watercourse was an effluent from the Los Alcazares WWTP, although other sources were also present (runoffs, excess water from irrigation, etc.). In this urban and agriculturally influenced watercourse different pharmaceutical distribution profiles were detected according to their attenuation, which depended on physicochemical water conditions, pollutant input variation, biodegradation and photodegradation rates of pollutants, etc. The less recalcitrant compounds in this study (macrolides, beta-blockers, etc.) showed a relevant seasonal variability as a consequence of dissipation processes (degradation, sorption, etc.). Attenuation was lower, however, for diclofenac, carbamazepine, lorazepam, valsartan, sulfamethoxazole among others, due to their known lower degradability and sorption onto particulate matter, according to previous studies. The maximum concentrations detected were higher than 1000 ng L-1 for azithromycin, clarithromycin, valsartan, acetaminophen and ibuprofen. These high concentration levels were favored by the limited dilution in this low flow system, and consequently some of them could pose an acute risk to the biota of this watercourse. Considering data from 2009 to 2010, it has been estimated that a total of 11.3 kg of pharmaceuticals access the Mar Menor lagoon annually through the El Albujon watercourse. The highest proportion of this input corresponded to antibiotics (46%), followed by antihypertensives (20%) and diuretics (18%). (C) 2014 Elsevier B.V. All rights reserved.

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Moreno-Gonzalez R. Rodriguez-Mozaz S. Gros M. Perez-Canovas E. y Barcelo D. Leon V. M. Input of pharmaceuticals through coastal surface watercourses into a Mediterranean lagoon (Mar Menor SE Spain): Sources and seasonal variations. Elsevier B.V., 2014. https://doi.org/10.1016/j.scitotenv.2014.04.097

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Tipo de recurso Artículo
Fecha de creación 05-11-2024
Fecha de última modificación 05-11-2024
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Identificador de los metadatos 0a9eb834-17f9-542a-b08d-af2905e8fd13
Idioma de los metadatos Español
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Categoría del conjunto de alto valor (HVD) Observación de la Tierra y medio ambiente
Categoría temática ISO 19115 biota
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Nombre del autor Moreno-Gonzalez, R., Rodriguez-Mozaz, S., Gros, M., Perez-Canovas, E. y Barcelo, D., Leon, V. M.
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Identificador alternativo DOI: 10.1016/j.scitotenv.2014.04.097
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Email del autor victor.leon@mu.ieo.es
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