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Seasonal geochemical trends and pollution assessment of bottom sediments in the São Francisco hydrographic basin, Brazil: the Três Marias Reservoir.
Lima, Gustavo Filemon Costa; Bento, Ciro Couto; Horn, Adolf Heinrich; Marques, Eduardo Duarte; Filho, Hernando Baggio.
Afiliação
  • Lima GFC; NGqA (Center of Environmental Geology), CPMTC - Department of Geosciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, 31270-901, Brazil. gustavofilemon2@gmail.com.
  • Bento CC; Department of Transports Engineering, Federal Centre for Technological Education of Minas Gerais (CEFET-MG), Belo Horizonte, MG, 30421-169, Brazil. gustavofilemon2@gmail.com.
  • Horn AH; Geology Center, Science and Technology Institute, Federal University of Vale Do Jequitinhonha and Mucuri, Diamantina, 39803-371, Brazil.
  • Marques ED; NGqA (Center of Environmental Geology), CPMTC - Department of Geosciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, 31270-901, Brazil.
  • Filho HB; Geological Survey of Brazil (CPRM), Belo Horizonte Regional Office, Belo Horizonte, 30140-002, Brazil.
Environ Sci Pollut Res Int ; 29(28): 42929-42946, 2022 Jun.
Article em En | MEDLINE | ID: mdl-35091934
The Três Marias Reservoir is the ninth largest reservoir in Brazil, becoming crucial for national strategic development. However, many anthropic activities may affect the sediment quality, promoting the need for a proper environmental assessment. This research appraised the seasonal influences on the Três Marias Reservoir's sediment geochemistry, elucidating possible anthropogenic impacts. The concentrations of Mg, Al, Ca, Cr, Fe, Co, Cu, Cd, Ti, Mn, Ni, Zn, Ba, and Pb were measured in 78 samples of bottom sediments regarding the two seasons of the area, a dry winter and rainy summer. The median ± 2 median absolute deviation (MAD) settled the geochemical background and environmental thresholds for the two seasons. The sediment quality guidelines CONAMA 344/12 highlight the possible adverse ecological effects of pollutants. The hierarchical clustering analysis, the geoaccumulation index, and the pollution load index delineated the polluted zones. The pollution load index ranges from 0.25 to 2.28 in the dry season and 0.56 to 2.11 in the rainy season, defining three affected zones in the reservoir. Forestry and agriculture are the probable pollution sources, reaching warning levels that should be considered in further environmental strategies.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Metais Pesados País/Região como assunto: America do sul / Brasil Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha
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 País/Região como assunto: America do sul / Brasil Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha