Distribuição, fracionamento e mobilidade de elementos traço em sedimentos superficiais Distribution, fractional and mobility of trace elements in stream sediments
<abstract language="eng">The gold and iron mining activities in the Velhas River yield considerable amounts of suspended solids as well as metals to the hydrological system of the region. The risks were assessed by sequential extraction procedures. They were carried out in sediment s...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
2007-10-01
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| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000500037 |
| _version_ | 1828285817989103616 |
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| author | Janice Cardoso Pereira Aline Kelly Guimarães-Silva Hermínio Arias Nalini Júnior Érica Pacheco-Silva Jorge Carvalho de Lena |
| author_facet | Janice Cardoso Pereira Aline Kelly Guimarães-Silva Hermínio Arias Nalini Júnior Érica Pacheco-Silva Jorge Carvalho de Lena |
| author_sort | Janice Cardoso Pereira |
| collection | DOAJ |
| description | <abstract language="eng">The gold and iron mining activities in the Velhas River yield considerable amounts of suspended solids as well as metals to the hydrological system of the region. The risks were assessed by sequential extraction procedures. They were carried out in sediment samples, aiming to evaluate the presence of Co, Cr, Cu, Ni, Zn and As. Although being at high levels in some parts of the river (e.g. As 527 mg g-1 and Cr 475 mg g-1) they are associated with the residual fraction. Mobility factors were also calculated and show that these species are enriched along the river, e.g. for As 0.02 at the spring and 0.33 at the high course of the river. |
| first_indexed | 2024-04-13T09:21:04Z |
| format | Article |
| id | doaj.art-93449ee302114c41802c1910aa3250c6 |
| institution | Directory Open Access Journal |
| issn | 0100-4042 1678-7064 |
| language | English |
| last_indexed | 2024-04-13T09:21:04Z |
| publishDate | 2007-10-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-93449ee302114c41802c1910aa3250c62022-12-22T02:52:35ZengSociedade Brasileira de QuímicaQuímica Nova0100-40421678-70642007-10-013051249125510.1590/S0100-40422007000500037Distribuição, fracionamento e mobilidade de elementos traço em sedimentos superficiais Distribution, fractional and mobility of trace elements in stream sedimentsJanice Cardoso PereiraAline Kelly Guimarães-SilvaHermínio Arias Nalini JúniorÉrica Pacheco-SilvaJorge Carvalho de Lena<abstract language="eng">The gold and iron mining activities in the Velhas River yield considerable amounts of suspended solids as well as metals to the hydrological system of the region. The risks were assessed by sequential extraction procedures. They were carried out in sediment samples, aiming to evaluate the presence of Co, Cr, Cu, Ni, Zn and As. Although being at high levels in some parts of the river (e.g. As 527 mg g-1 and Cr 475 mg g-1) they are associated with the residual fraction. Mobility factors were also calculated and show that these species are enriched along the river, e.g. for As 0.02 at the spring and 0.33 at the high course of the river.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000500037sedimentstrace elementsfractionation |
| spellingShingle | Janice Cardoso Pereira Aline Kelly Guimarães-Silva Hermínio Arias Nalini Júnior Érica Pacheco-Silva Jorge Carvalho de Lena Distribuição, fracionamento e mobilidade de elementos traço em sedimentos superficiais Distribution, fractional and mobility of trace elements in stream sediments Química Nova sediments trace elements fractionation |
| title | Distribuição, fracionamento e mobilidade de elementos traço em sedimentos superficiais Distribution, fractional and mobility of trace elements in stream sediments |
| title_full | Distribuição, fracionamento e mobilidade de elementos traço em sedimentos superficiais Distribution, fractional and mobility of trace elements in stream sediments |
| title_fullStr | Distribuição, fracionamento e mobilidade de elementos traço em sedimentos superficiais Distribution, fractional and mobility of trace elements in stream sediments |
| title_full_unstemmed | Distribuição, fracionamento e mobilidade de elementos traço em sedimentos superficiais Distribution, fractional and mobility of trace elements in stream sediments |
| title_short | Distribuição, fracionamento e mobilidade de elementos traço em sedimentos superficiais Distribution, fractional and mobility of trace elements in stream sediments |
| title_sort | distribuicao fracionamento e mobilidade de elementos traco em sedimentos superficiais distribution fractional and mobility of trace elements in stream sediments |
| topic | sediments trace elements fractionation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422007000500037 |
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