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| Natura: | Artículo científico |
| Lingua: | en |
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Universidade Estadual de Maringá
2010
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=187115378005 |
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Sommario:
- Heavy metal levels in surface waters from a tropical river basin, Pernambuco State, northeastern Brazil Fabio Marques Aprile Marc Bouvy Biología water quality enrichment factor anthropogenic sources index of contamination Trace metal distribution Monthly, the distribution and enrichment of heavy metals (Fe, Mn, Cu, Pb and Zn) in surface waters were examined at eight sampling sites, in Tapacurá river (Pernambuco State, Brazil), from March 1997 to December 1998 and from June 2005 to March 2006. On average, metal levels ranged from 0.30 to 4.22 for Fe; 0.02 to 1.09 for Mn; 0.001 to 0.014 for Cu; < 0.006 to 0.029 for Pb and 0.003 to 0.020 for Zn, all in mg L-1. Heavy metals presented a great heterogeneous horizontal distribution, with hotspots in municipal and agricultural areas. The enrichment factor (EF) and the potential contamination index (Cp) indicated moderate to severe contamination by Cu and Zn. The results pointed the potential pathways of trace metals via the transport of soil for the river basin, mainly from agricultural areas, and inefficient sewage treatment at the cities. The first step to apply a remedial measure is the inspection of the agricultural areas, the controlled use of fertilizers and herbicides, as well as the development of an efficient sewage treatment to urban areas. 2010 artículo científico 1679-9283 https://www.redalyc.org/articulo.oa?id=187115378005 en http://www.redalyc.org/revista.oa?id=1871 Acta Scientiarum. Biological Sciences application/pdf Universidade Estadual de Maringá Acta Scientiarum. Biological Sciences (Brasil) Num.4 Vol.32