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Pharmaceuticals as emerging contaminants in the aquatic environment of Latin America: a review

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Abstract

Pharmaceutical active compounds (PhACs) are environmentally ubiquitous around the world, and the countries of Latin America (LATAM) are not the exception; however there is still little knowledge of the magnitude and conditions of their occurrence in LATAM and of the environmental consequences of their presence. The present work reviews 79 documents published from 2007 to 2019 on the occurrence, concentrations, and sources of PhACs and hormones in surface water (SW), wastewater (WW), and treated wastewater (TWW) in LATAM and on the circumstances of their release to the environment. Research efforts are reported in only ten countries and confirm the presence of 159 PhACs, mainly analgesics and anti-inflammatories, although extraordinarily high concentrations of carbamazepine (830 μg/L) and ethinylestradiol (6.8 μg/L) were found in Ecuador and Brazil, respectively. The analysis of maximum concentrations and the ecotoxicological risk assessment corroborate that (1) these values exceed the environmental concentrations found in other parts of the world, (2) the environmental risk posed by these concentrations is remarkably high, and (3) there is no statistically significant difference between the maximum concentrations found in WW and those found in TWW. The main source of PhACs in LATAM’s aquatic environment is WW; hence, these countries should direct substantial efforts to develop efficient and cost-effective treatment technologies and plan and apply WW management strategies and regulations. This analysis presents the current states of occurrence, concentrations, and sources of PhACs in the aquatic environment of LATAM and outlines the magnitude of the environmental problem in that part of the world.

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Acknowledgments

The authors thank the University of Arizona-CONACYT Binational Consortium for the Regional Scientific Development and Innovation (CAZMEX) for the economic support in the investigation of PhACs as a special case of EC. Particular thanks to CONACYT for the graduate scholarship granted to the first author of this document. Also, many thanks to the reviewers of the manuscript for their generous advice that helped improve and enrich it. We want to recognize the assistance of Priscila Berenice Gonzalez Hernandez who performed language corrections in this document.

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Correspondence to Concepción Carreón-Diazconti.

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Responsible Editor: Ester Heath

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Valdez-Carrillo, M., Abrell, L., Ramírez-Hernández, J. et al. Pharmaceuticals as emerging contaminants in the aquatic environment of Latin America: a review. Environ Sci Pollut Res 27, 44863–44891 (2020). https://doi.org/10.1007/s11356-020-10842-9

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  • DOI: https://doi.org/10.1007/s11356-020-10842-9

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