Spatial-temporal variations of metals and arsenic in sediments from the Doce River after the Fundao dam rupture and their bioaccumulation in Corbicula fluminea

Autor(es)

de Figueiredo Eufrasio Pauly, Guacira ; Cruz, Ana C. F. ; Trevizani, Tailisi H. ; Mi Kim, Bianca S. ; Perina, Fernando C. ; Yamamoto, Flavia Y. ; Figueira, Rubens C. L. ; de Souza Abessa, Denis M.

• Tipo de documento: Artigo Científico
• Fonte: INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT; v. N/A, p. 12-pg., 2023-05-05.

Resumo

The rupture of the Fundao dam in Brazil released tons of mining tailings into the Doce River Basin (DRB). This investigation aimed to determine the bioaccumulation of metals in soft tissues of the bivalve Corbicula fluminea exposed to sediments collected in the DRB in four periods (just after, 1, 3, and 3.5 years after the dam rupture). In the exposure bioassays, the concentrations of Al, As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn in sediments and bivalve soft tissues were quantified. The concentration of some elements (As, Cd, Mn, and Al) in sediments exceeded the federal limits or regional backgrounds at some sampling sites, but their concentrations tended to decrease over time. However, higher concentrations of many elements were detected in the winter of 2019. Several elements were detected in C. fluminea soft tissues, but the bioaccumulation factors were generally low or not related to those elements associated with the ore tailings, evidencing that the bioavailability of metals to bivalves, in laboratory conditions, was limited. Integr Environ Assess Manag 2023;00:1-12. (c) 2023 SETAC (AU)

• Processo FAPESP: 18/23279-4 - Além das medições convencionais: avaliação de efeitos tóxicos em Danio rerio e Corbicula fluminea associados a água e sedimentos contaminados por rejeitos de mineração, liberados após o acidente com a Barragem do Fundão no Rio Doce (ES - MG)
• Beneficiário: Guacira de Figueiredo Eufrasio Pauly
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 16/15229-1 - Avaliação da toxicidade dos poluentes presentes no Rio Doce após rompimento da Barragem do Fundão (MG) através de diferentes biomarcadores em peixes
• Beneficiário: Flávia Yoshie Yamamoto
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado