Occurrence and Environmental Risk Assessment of Contaminants of Emerging Concern in Brazilian Surface Waters

Autor(es)

Oliveira, Thiessa M. A. ; Mansano, Adrislaine S. ; Holanda, Carlos A. ; Pinto, Tiago S. ; Reis, Jonas B. ; Azevedo, Eduardo B. ; Verbinnen, Raphael T. ; Viana, Jose Lucas ; Franco, Teresa C. R. S. ; Vieira, Eny M.

• Tipo de documento: Artigo Científico
• Fonte: Environmental Toxicology and Chemistry; v. 43, n. 10, p. 12-pg., 2024-07-29.

Resumo

We investigated the occurrence and the environmental risk of eight contaminants of emerging concern (CECs; acetaminophen, naproxen, diclofenac, methylparaben, 17 beta-estradiol, sulfathiazole, sulfadimethoxine, and sulfamethazine) in three Brazilian water bodies, namely, the Monjolinho River Basin (S & atilde;o Paulo State), the Mogi Gua & ccedil;u River (S & atilde;o Paulo State), and the Itapecuru River (Maranh & atilde;o State) in three sampling campaigns. The CECs were only quantified in surface water samples collected at the Monjolinho River Basin. Acetaminophen, naproxen, and methylparaben were detected in the range of <200 to 575.9 ng L-1, <200 to 224.7 ng L-1, and <200 to 303.6 ng L-1, respectively. The detection frequencies of the three measured compounds were between 33% and 67%. The highest concentrations of CECs were associated with intense urbanization and untreated sewage discharge. Furthermore, CEC concentrations were significantly correlated with total organic carbon, electrical conductivity, and dissolved oxygen levels, suggesting that domestic pollution from urban areas is an important source in the distribution of CECs in the Monjolinho River Basin. The environmental risk assessment indicated a high risk for acetaminophen (risk quotient [RQ] values between 2.1 and 5.8), a medium risk for naproxen (RQs between 0.6 and 0.7), and a low risk for methylparaben (RQs < 0.1) to the freshwater biota of the Monjolinho River Basin. Our findings show potential threats of CECs in Brazilian water bodies, especially in vulnerable areas, and reinforce the need for improvements in environmental regulations to include monitoring and control of these compounds in aquatic systems. Environ Toxicol Chem 2024;00:1-12. (c) 2024 SETAC (AU)

• Processo FAPESP: 14/02739-6 - Reuso de água em irrigação e aquicultura: inativação de fármacos e interferentes endócrinos pelo processo foto-fenton solar
• Beneficiário: Eduardo Bessa Azevedo
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/03770-9 - Desenvolvimento de Eletrodos de Difusão Gasosa (EDG) modificados com óxidos metálicos micro e nanoestruturados para a eletrogeração in situ de H2O2 visando aplicações ambientais
• Beneficiário: Jonas Batista Reis
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 19/18124-4 - Fluxos, especiação e biodisponibilidade de arsênio na interface água/sedimento em lagoas alcalinas do Pantanal de Nhecolândia utilizando DGT
• Beneficiário: José Lucas Martins Viana
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 23/15970-7 - Terras raras (REEs) como contaminantes emergentes no Brasil: Ocorrência e distribuição de Ce total, dissolvido, lábil e na forma de nanopartículas no ambiente
• Beneficiário: José Lucas Martins Viana
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado