Assessment of contaminants of emerging concern and antibiotic resistance genes in the Mapocho River (Chile): A comprehensive study on water quality and municipal wastewater impact

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dc.contributor.authorHerrera-Munoz, Jose
dc.contributor.authorIbanez, Maria
dc.contributor.authorCalzadilla, Wendy
dc.contributor.authorCabrera-Reina, Alejandro
dc.contributor.authorGarcia, Veronica
dc.contributor.authorSalazar-Gonzalez, Ricardo
dc.contributor.authorHernandez, Felix
dc.contributor.authorCampos-Manas, Marina
dc.contributor.authorMiralles-Cuevas, Sara
dc.date.accessioned2025-01-20T16:08:03Z
dc.date.available2025-01-20T16:08:03Z
dc.date.issued2024
dc.description.abstractThe primary objective of this study was to evaluate the persistence and elimination of Contaminants of Emerging Concern (CECs) in municipal wastewater treatment plants (MWWTPs) and their presence in the Mapocho River within the metropolitan area of Santiago, Chile. The use of advanced analytical techniques, based on liquid chromatography coupled to both low and high-resolution mass spectrometry, allowed a comprehensive overview on the presence of CECs in samples. Additionally, a preliminary assessment of the microbiological aspects aimed to determine the presence of indicator microorganisms of fecal contamination, such as Escherichia coli and total coliforms was conducted. Furthermore, a qualitative assessment of Antibiotic Resistant Genes (ARGs) was performed. No CECs were detected upstream to the MWWTPs. However, the results from various wastewater samples (influent, secondary, and tertiary effluents) revealed significant diversity, with 73 CECs detected alongside prevalent ARGs including sult, , sulftt, , qnrB, , and blaTEM. . The presence of CECs and ARGs downstream of the MWWTP in the Mapocho River was mainly attributed to effluent discharge. On the other hand, typical values for a healthy river and a MWWTP with a final disinfection stage were found in terms of fecal contamination. Consequently, the imperative for developing tertiary or quaternary treatments capable of degrading CECs and ARGs to minimize environmental impact is underscored. These findings hold public health significance, offering insights into potential risks and influencing future legislative measures in Chile.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.scitotenv.2024.176198
dc.identifier.eissn1879-1026
dc.identifier.issn0048-9697
dc.identifier.urihttps://doi.org/10.1016/j.scitotenv.2024.176198
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90046
dc.identifier.wosidWOS:001320548600001
dc.language.isoen
dc.revistaScience of the total environment
dc.rightsacceso restringido
dc.subjectMicropollutants
dc.subjectARGs
dc.subjectWastewater treatment
dc.subjectMWWTP
dc.subjectPublic health
dc.subjectWater pollution
dc.subject.ods03 Good Health and Well-being
dc.subject.ods06 Clean Water and Sanitation
dc.subject.odspa03 Salud y bienestar
dc.subject.odspa06 Agua limpia y saneamiento
dc.titleAssessment of contaminants of emerging concern and antibiotic resistance genes in the Mapocho River (Chile): A comprehensive study on water quality and municipal wastewater impact
dc.typeartículo
dc.volumen954
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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