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Fractionation and speciation of metals in lakes formed by abandoned clay pits from industrial effluents (Santa Gertrudes, São Paulo, Brazil) using the diffusive gradient in thin films (DGT) technique.
Venciguerra, Lucas Souza; Lima, Guilherme Dos Santos; da Silva, Isabella Carvalho Pereira; Gemeiner, Hendryk; Zanatta, Melina Borges Teixeira; Menegário, Amauri Antonio.
Afiliação
  • Venciguerra LS; Environmental Studies Center (CEA), São Paulo State University, UNESP, Rio Claro, SP, 13506-900, Brazil. Electronic address: lucas.venciguerra@unesp.br.
  • Lima GDS; Environmental Studies Center (CEA), São Paulo State University, UNESP, Rio Claro, SP, 13506-900, Brazil.
  • da Silva ICP; Environmental Studies Center (CEA), São Paulo State University, UNESP, Rio Claro, SP, 13506-900, Brazil.
  • Gemeiner H; Environmental Studies Center (CEA), São Paulo State University, UNESP, Rio Claro, SP, 13506-900, Brazil; Basin Studies Laboratory (LEBAC), São Paulo State University (UNESP), Avenida 24-A, 1515, 13506-900, Rio Claro, SP, Brazil.
  • Zanatta MBT; Environmental Studies Center (CEA), São Paulo State University, UNESP, Rio Claro, SP, 13506-900, Brazil.
  • Menegário AA; Environmental Studies Center (CEA), São Paulo State University, UNESP, Rio Claro, SP, 13506-900, Brazil. Electronic address: amauri.antonio-menegario@unesp.br.
Chemosphere ; 341: 139948, 2023 Nov.
Article em En | MEDLINE | ID: mdl-37648170
Environmental impacts caused by mining activities (mainly tailings and effluents) are presenting serious challenges for humanity worldwide. In Brazil, clay extraction activities in the Ceramic District of Santa Gertrudes (CDSG) have led to the formation of abandoned drainage wells causing environmental and human health concerns. In the 90's, it was discovered that in one of the production areas, known as the region of the lakes of Santa Gertrudes, several ceramic industries had contaminated lakes created by abandoned clay pits with industrial effluents containing toxic metals. In the present study, analysis of total and dissolved concentrations of Al, Cd, Co, Cu, Mn, Ni, Pb and Zn in the waters of these lakes were combined with the diffusive gradients in thin films (DGT) technique to assess the lability and bioavailability of the target elements, representing one of the first studies to investigate the real environmental impact of contamination caused by ceramic production wastes to an aquatic system. Furthermore, based on the total concentrations and main physicochemical characteristics of each lake, a speciation analysis was performed using the MINTEQ software which data was compared with other surface water systems. The results indicated the presence of metals associated with ceramic residues in total, dissolved and labile fractions. It was verified that Zn, Ni and Cu were the only target metals found in labile form and according to speciation were present in the form of "free" ions, and thus may present risk in terms of bioavailability, although the majority of the total concentrations are within the limits established by the national environmental agency.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Metais Pesados Limite: Humans País/Região como assunto: America do sul / Brasil Idioma: En Revista: Chemosphere Ano de publicação: 2023 Tipo de documento: Article País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Metais Pesados Limite: Humans País/Região como assunto: America do sul / Brasil Idioma: En Revista: Chemosphere Ano de publicação: 2023 Tipo de documento: Article País de publicação: Reino Unido