| Campo DC | Valor | Idioma |
|---|
| dc.contributor.author | Moreira, Ricardo Cosme Arraes | pt_BR |
| dc.contributor.author | Boaventura, Geraldo Resende | pt_BR |
| dc.date.accessioned | 2017-12-07T04:37:40Z | - |
| dc.date.available | 2017-12-07T04:37:40Z | - |
| dc.date.issued | 2003-12 | pt_BR |
| dc.identifier.citation | MOREIRA, Ricardo Cosme Arraes; BOAVENTURA, Geraldo Resende. Referência geoquímica regional para a interpretação das concentrações de elementos químicos nos sedimentos da bacia do Lago Paranoá - DF. Química Nova, São Paulo, v. 26, n. 6, p. 812-820, nov./dez. 2003. DOI: https://doi.org/10.1590/S0100-40422003000600006. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422003000600006&lng=pt&nrm=iso. Acesso em: 12 jan. 2021. | pt_BR |
| dc.identifier.uri | http://repositorio.unb.br/handle/10482/26001 | - |
| dc.language.iso | pt | pt_BR |
| dc.publisher | Sociedade Brasileira de Química | pt_BR |
| dc.rights | Acesso Aberto | pt_BR |
| dc.title | Referência geoquímica regional para a interpretação das concentrações de elementos químicos nos sedimentos da bacia do Lago Paranoá - DF | pt_BR |
| dc.title.alternative | Regional geochemical reference for the interpretation of the chemical elements concentrations in the sediment samples from Lago Paranoá watershed-DF | - |
| dc.type | Artigo | pt_BR |
| dc.subject.keyword | Índice de geocumulação | pt_BR |
| dc.subject.keyword | Sedimentos (Geologia) | pt_BR |
| dc.subject.keyword | Matéria orgânica | pt_BR |
| dc.rights.license | Química Nova - Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons (CC BY NC 4.0). Fonte: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422003000600006&lng=pt&nrm=iso&tlng=pt. Acesso em: 12 jan. 2021. | - |
| dc.identifier.doi | https://dx.doi.org/10.1590/S0100-40422003000600006 | pt_BR |
| dc.description.abstract1 | The present study aimed at determining a regional geochemical reference for sediment samples from Lago Paranoá watershed through the formulation of geoaccumulation indexes. The need for obtaining information from areas representing low human impact was the basis of this work. Systematic evaluations of sediment from Lago Paranoá will bring valuable information regarding the potential risk that this layer represents for aquatic organisms. Thus, despite the recent water quality improvements achieved in this ecosystem, contaminants incorporated in the sediments may be remobilized for alterations in the adjacent environment. The adsorption capacity of chemical elements in sediment samples was controlled through the variation in the amounts of organic matter, the mineralogical composition and the granulometric variation. By creating the Sediment Enrichment Index (SEI) through the normalization of analytical data it was possible to establish the magnitude of this enrichment relatively to naturally occurring concentrations all over the region of interest. Normalized values with organic matter were especially useful for the evaluation of lothic systems. | - |
| Aparece nas coleções: | Artigos publicados em periódicos e afins
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