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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.
Herrera-Muñoz, José; Ibáñez, María; Calzadilla, Wendy; Cabrera-Reina, Alejandro; García, Verónica; Salazar-González, Ricardo; Hernández, Félix; Campos-Mañas, Marina; Miralles-Cuevas, Sara.
Afiliação
  • Herrera-Muñoz J; Facultad de Química y Biología, Universidad de Santiago de Chile, USACH, Casilla 40, Correo 33, Santiago, Chile; Grupo de Investigación de Análisis, Tratamiento, Electroquímica, Recuperación y Reúso de Agua (WATER(b)), Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Pontificia
  • Ibáñez M; Environmental and Public Health Analytical Chemistry, Research Institute for Pesticides and Water (IUPA), University Jaume I, Avda. Sos Baynat s/n, 12071 Castellón, Spain.
  • Calzadilla W; Grupo de Investigación de Análisis, Tratamiento, Electroquímica, Recuperación y Reúso de Agua (WATER(b)), Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Chile.
  • Cabrera-Reina A; Instituto Universitario de Investigación y Desarrollo Tecnológico (IDT), Universidad Tecnológica Metropolitana, Ignacio Valdivieso 2409, San Joaquín, Santiago, Chile.
  • García V; Departamento de Ciencia y Tecnología de los Alimentos, Universidad de Santiago de Chile, Alameda 3363, Estación Central, Santiago, Chile; Centro de Estudio en Ciencia y Tecnología de los Alimentos (CECTA-USACH), Obispo Manuel Umaña 050, Estación Central, Santiago, Chile.
  • Salazar-González R; Grupo de Investigación de Análisis, Tratamiento, Electroquímica, Recuperación y Reúso de Agua (WATER(b)), Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Chile. Electronic address: ricardo.salazar@uc.cl.
  • Hernández F; Environmental and Public Health Analytical Chemistry, Research Institute for Pesticides and Water (IUPA), University Jaume I, Avda. Sos Baynat s/n, 12071 Castellón, Spain.
  • Campos-Mañas M; Environmental and Public Health Analytical Chemistry, Research Institute for Pesticides and Water (IUPA), University Jaume I, Avda. Sos Baynat s/n, 12071 Castellón, Spain.
  • Miralles-Cuevas S; Instituto Universitario de Investigación y Desarrollo Tecnológico (IDT), Universidad Tecnológica Metropolitana, Ignacio Valdivieso 2409, San Joaquín, Santiago, Chile. Electronic address: smiralles@utem.cl.
Sci Total Environ ; 954: 176198, 2024 Sep 14.
Article em En | MEDLINE | ID: mdl-39278476
ABSTRACT
The 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 sulI, sulfII, 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.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE País/Região como assunto: America do sul / Chile Idioma: En Revista: Sci Total Environ Ano de publicação: 2024 Tipo de documento: Article País de publicação: Holanda

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE País/Região como assunto: America do sul / Chile Idioma: En Revista: Sci Total Environ Ano de publicação: 2024 Tipo de documento: Article País de publicação: Holanda