Occurrence of antibiotics, hormones and PFAs in surface water from a Nile tilapia aquaculture facility in a Brazilian hydroelectric reservoir

Daniel Aparecido da S. Rodrigues, Maria Clara V.M. Starling, André Luiz C.de Barros, Mônica C. Santos, Eloísa Stéphanie da Silva, Guenther Carlos C. Viana, Lara Fabian da S. Ribeiro, Matt F. Simcik, Camila C. Amorim

Research output: Contribution to journalArticlepeer-review

Abstract

This study assessed the occurrence of five antibiotics, three hormones, caffeine, and long and short-chain perfluoroalkyl and polyfluoroalkyl substances (PFASs) in surface water and feedstuff samples obtained from aquaculture cages in Três Marias reservoir in Brazil. This is the first work to evaluate the presence of PFAS in surface water used for aquaculture in Brazil. Solid-phase extraction and low temperature partitioning extraction followed by liquid chromatography coupled to mass spectrometry (LC-MS) were performed to process and analyze surface water samples and feedstuff, respectively. The ecotoxicological risk quotient was calculated for target compounds detected in water. Ciprofloxacin and caffeine were detected in all surface water samples. Pharmaceutical drugs ranged from 0.7 ng L−1 (trimethoprim) to 389.2 ng L −1 (β-estradiol). Estrone (10.24 ng g−1) and β-estradiol (66.20 ng g−1) were also found in feedstuff. Four PFASs (PFOA, PFDoA, PFTeDA, and PFBS) were detected (9.40–15.2 μg L−1) at levels higher than reported in studies conducted worldwide. Ecotoxicological risk assessment indicated high risks for caffeine and PFOA, PFDoA, and PFTeDA with RQ values from 10 to 103. These findings reveal risks to biodiversity, ecosystem integrity and human health considering possible intake of these contaminants by fish consumption due to potential bioaccumulation of these substances. Hence, it is critical to conduct more studies in this direction in Brazil and other low and middle-low-income countries.

Original languageEnglish (US)
Article number141444
JournalChemosphere
Volume352
DOIs
StatePublished - Mar 2024

Bibliographical note

Publisher Copyright:
© 2024

Keywords

  • Contaminants of emerging concern (CECs)
  • Ecotoxicological risk assessment
  • Pharmaceutical drugs
  • Water pollution
  • Water quality

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