Heavy Metal Distribution in the Bottom Sediments Along Tietê River Basin
Analysis of heavy metals in fluvial sediments has been used to better understand the potential hazards and criticaltoxicity of heavy metals mainly related to the anthropogenic influences of urban sewage, industrial effluents and agriculturalactivity. The present study analyzed the heavy metals, such...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Universidade de São Paulo
2010-07-01
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| Series: | Geologia USP. Série Científica |
| Subjects: | |
| Online Access: | http://ppegeo-local.igc.usp.br/pdf/guspsc/v10n2/01.pdf |
| _version_ | 1818081235237339136 |
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| author | Jefferson Mortatti Christophe Hissler Jean-Luc Probst |
| author_facet | Jefferson Mortatti Christophe Hissler Jean-Luc Probst |
| author_sort | Jefferson Mortatti |
| collection | DOAJ |
| description | Analysis of heavy metals in fluvial sediments has been used to better understand the potential hazards and criticaltoxicity of heavy metals mainly related to the anthropogenic influences of urban sewage, industrial effluents and agriculturalactivity. The present study analyzed the heavy metals, such as Cr, Cu, Ni, Zn and Pb, in the bottom sediments along the TietêRiver basin, a polluted watershed in the Southeast region of Brazil. The distribution of the concentrations of heavy metals inthe upper basin decreased in the following order: Zn > Cr > Pb > Ni > Cu, whereas, in the middle part of the basin (whichis under strong urban and industrial influences), high concentrations of Zn, Cu and Cr were observed, measuring 648, 200and 183 μg g-1, respectively. The sequential chemical extraction in relation to the total concentration was used to assessthe potential bioavailability of heavy metals. In the upper part of the basin, the heavy metals extracted from the bottomsediments were mainly related to the residual fraction, whereas, in the middle part of the basin, the bioavailability of Zn, Crand Ni was higher than 60%, and these metals were mainly related to the iron oxide phase. The high concentration of heavymetals observed in the middle basin of the Tietê river (after the metropolitan area of São Paulo), when compared with theaverage concentration found in the geochemical bottom, showed that, in terms of enrichment factor and geoaccumulationindex, the degree of pollution by Zn is high and by Ni is high to moderate in the downstream direction. |
| first_indexed | 2024-12-10T19:02:59Z |
| format | Article |
| id | doaj.art-3bd42872de2d4214be9c7055d0c97688 |
| institution | Directory Open Access Journal |
| issn | 1519-874X |
| language | English |
| last_indexed | 2024-12-10T19:02:59Z |
| publishDate | 2010-07-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Geologia USP. Série Científica |
| spelling | doaj.art-3bd42872de2d4214be9c7055d0c976882022-12-22T01:36:58ZengUniversidade de São PauloGeologia USP. Série Científica1519-874X2010-07-01102311Heavy Metal Distribution in the Bottom Sediments Along Tietê River BasinJefferson MortattiChristophe HisslerJean-Luc ProbstAnalysis of heavy metals in fluvial sediments has been used to better understand the potential hazards and criticaltoxicity of heavy metals mainly related to the anthropogenic influences of urban sewage, industrial effluents and agriculturalactivity. The present study analyzed the heavy metals, such as Cr, Cu, Ni, Zn and Pb, in the bottom sediments along the TietêRiver basin, a polluted watershed in the Southeast region of Brazil. The distribution of the concentrations of heavy metals inthe upper basin decreased in the following order: Zn > Cr > Pb > Ni > Cu, whereas, in the middle part of the basin (whichis under strong urban and industrial influences), high concentrations of Zn, Cu and Cr were observed, measuring 648, 200and 183 μg g-1, respectively. The sequential chemical extraction in relation to the total concentration was used to assessthe potential bioavailability of heavy metals. In the upper part of the basin, the heavy metals extracted from the bottomsediments were mainly related to the residual fraction, whereas, in the middle part of the basin, the bioavailability of Zn, Crand Ni was higher than 60%, and these metals were mainly related to the iron oxide phase. The high concentration of heavymetals observed in the middle basin of the Tietê river (after the metropolitan area of São Paulo), when compared with theaverage concentration found in the geochemical bottom, showed that, in terms of enrichment factor and geoaccumulationindex, the degree of pollution by Zn is high and by Ni is high to moderate in the downstream direction.http://ppegeo-local.igc.usp.br/pdf/guspsc/v10n2/01.pdfTietê RiverHeavy metalBottom sedimentSequential extractionEFIgeo |
| spellingShingle | Jefferson Mortatti Christophe Hissler Jean-Luc Probst Heavy Metal Distribution in the Bottom Sediments Along Tietê River Basin Geologia USP. Série Científica Tietê River Heavy metal Bottom sediment Sequential extraction EF Igeo |
| title | Heavy Metal Distribution in the Bottom Sediments Along Tietê River Basin |
| title_full | Heavy Metal Distribution in the Bottom Sediments Along Tietê River Basin |
| title_fullStr | Heavy Metal Distribution in the Bottom Sediments Along Tietê River Basin |
| title_full_unstemmed | Heavy Metal Distribution in the Bottom Sediments Along Tietê River Basin |
| title_short | Heavy Metal Distribution in the Bottom Sediments Along Tietê River Basin |
| title_sort | heavy metal distribution in the bottom sediments along tiete river basin |
| topic | Tietê River Heavy metal Bottom sediment Sequential extraction EF Igeo |
| url | http://ppegeo-local.igc.usp.br/pdf/guspsc/v10n2/01.pdf |
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