The contribution of heavy metal pollution derived from highway runoff to Guanabara Bay sediments: Rio de Janeiro / Brazil
In this study, geochemical and particle size analyses of thirty-four street sediment samples collected from an urban environment around Guanabara Bay, shows highway run-off to be a potential source of heavy metals for the pollution of near-shore sedimentary deposits. Concentrations of Fe, Mn, Zn, Cu...
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| Format: | Article |
| Language: | English |
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Academia Brasileira de Ciências
2007-12-01
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| Series: | Anais da Academia Brasileira de Ciências |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000400013 |
| _version_ | 1811265777331863552 |
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| author | Edisio Pereira José A. Baptista-Neto Bernard J. Smith John J. Mcallister |
| author_facet | Edisio Pereira José A. Baptista-Neto Bernard J. Smith John J. Mcallister |
| author_sort | Edisio Pereira |
| collection | DOAJ |
| description | In this study, geochemical and particle size analyses of thirty-four street sediment samples collected from an urban environment around Guanabara Bay, shows highway run-off to be a potential source of heavy metals for the pollution of near-shore sedimentary deposits. Concentrations of Fe, Mn, Zn, Cu, Pb, Cr and Ni were found to be higher in these sediments when compared to concentrations found in samples from the natural environment, where an Enrichment Factor (EF) index was used to distinguish between natural and anthropogenic sources. Particle size analysis shows these sediments to be predominantly composed of sand and no distribution pattern was observed between the sand, silt and clay fractions. High levels of organic matter and heavy metals would indicate that these street run-off materials are a potential source of pollution for the near-shore sediments of Guanabara Bay.<br>Neste estudo, análises geoquímica e de granulometria de trinta e quatro amostras de sedimentos coletados ao longo de rodovias em um ambiente urbano ao redor da Baía de Guanabara, mostram que o escoamento superficial das rodovias pode ser fonte potencial de metais pesados para a poluição de depósitos sedimentares costeiros. Concentrações de Fe, Mn, Zn, Cu, Pb, Cr e Ni são bem altas quando comparadas com os valores encontrados em ambientes naturais, onde o Fator de Enriquecimento (FE), que é índice de normalização, foi utilizado para a distinção entre fontes naturais e antropogênicas de metais pesados. As análises granulométricas mostram que estes sedimentos são compostos predominantemente de areia e nenhum padrão de distribuição foi observado entre as frações areia, silte e argila. Os altos níveis de matéria orgânica e metais pesados indicam que estes materiais depositados sobre as rodovias são fontes potenciais de poluição para os sedimentos costeiros da Baía de Guanabara. |
| first_indexed | 2024-04-12T20:30:02Z |
| format | Article |
| id | doaj.art-fffca968ce074e32af76ae0463107cf2 |
| institution | Directory Open Access Journal |
| issn | 0001-3765 1678-2690 |
| language | English |
| last_indexed | 2024-04-12T20:30:02Z |
| publishDate | 2007-12-01 |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj.art-fffca968ce074e32af76ae0463107cf22022-12-22T03:17:47ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências0001-37651678-26902007-12-0179473975010.1590/S0001-37652007000400013The contribution of heavy metal pollution derived from highway runoff to Guanabara Bay sediments: Rio de Janeiro / BrazilEdisio PereiraJosé A. Baptista-NetoBernard J. SmithJohn J. McallisterIn this study, geochemical and particle size analyses of thirty-four street sediment samples collected from an urban environment around Guanabara Bay, shows highway run-off to be a potential source of heavy metals for the pollution of near-shore sedimentary deposits. Concentrations of Fe, Mn, Zn, Cu, Pb, Cr and Ni were found to be higher in these sediments when compared to concentrations found in samples from the natural environment, where an Enrichment Factor (EF) index was used to distinguish between natural and anthropogenic sources. Particle size analysis shows these sediments to be predominantly composed of sand and no distribution pattern was observed between the sand, silt and clay fractions. High levels of organic matter and heavy metals would indicate that these street run-off materials are a potential source of pollution for the near-shore sediments of Guanabara Bay.<br>Neste estudo, análises geoquímica e de granulometria de trinta e quatro amostras de sedimentos coletados ao longo de rodovias em um ambiente urbano ao redor da Baía de Guanabara, mostram que o escoamento superficial das rodovias pode ser fonte potencial de metais pesados para a poluição de depósitos sedimentares costeiros. Concentrações de Fe, Mn, Zn, Cu, Pb, Cr e Ni são bem altas quando comparadas com os valores encontrados em ambientes naturais, onde o Fator de Enriquecimento (FE), que é índice de normalização, foi utilizado para a distinção entre fontes naturais e antropogênicas de metais pesados. As análises granulométricas mostram que estes sedimentos são compostos predominantemente de areia e nenhum padrão de distribuição foi observado entre as frações areia, silte e argila. Os altos níveis de matéria orgânica e metais pesados indicam que estes materiais depositados sobre as rodovias são fontes potenciais de poluição para os sedimentos costeiros da Baía de Guanabara.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000400013metais pesadosescoamento urbanoBaía de Guanabaraheavy metalsurban runoffGuanabara Bay |
| spellingShingle | Edisio Pereira José A. Baptista-Neto Bernard J. Smith John J. Mcallister The contribution of heavy metal pollution derived from highway runoff to Guanabara Bay sediments: Rio de Janeiro / Brazil Anais da Academia Brasileira de Ciências metais pesados escoamento urbano Baía de Guanabara heavy metals urban runoff Guanabara Bay |
| title | The contribution of heavy metal pollution derived from highway runoff to Guanabara Bay sediments: Rio de Janeiro / Brazil |
| title_full | The contribution of heavy metal pollution derived from highway runoff to Guanabara Bay sediments: Rio de Janeiro / Brazil |
| title_fullStr | The contribution of heavy metal pollution derived from highway runoff to Guanabara Bay sediments: Rio de Janeiro / Brazil |
| title_full_unstemmed | The contribution of heavy metal pollution derived from highway runoff to Guanabara Bay sediments: Rio de Janeiro / Brazil |
| title_short | The contribution of heavy metal pollution derived from highway runoff to Guanabara Bay sediments: Rio de Janeiro / Brazil |
| title_sort | contribution of heavy metal pollution derived from highway runoff to guanabara bay sediments rio de janeiro brazil |
| topic | metais pesados escoamento urbano Baía de Guanabara heavy metals urban runoff Guanabara Bay |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000400013 |
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