Heavy metal levels in surface waters from a tropical river basin, Pernambuco State, northeastern Brazil / Níveis de metais pesados em águas superficiais de um rio tropical, Estado de Pernambuco, Brasil
Acta sci., Biol. sci
;
32(4): 357-364, 2010. ilust, tab
Artigo
em Inglês
| LILACS
| ID: biblio-876408
ABSTRACT
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; ï£ 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.
RESUMO
Níveis de metais pesados em águas superficiais de um rio tropical, Estado de Pernambuco, Brasil
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Qualidade da Água
/
Metais Pesados
/
Poluição Ambiental
País/Região como assunto:
América do Sul
/
Brasil
Idioma:
Inglês
Revista:
Acta sci., Biol. sci
Assunto da revista:
Biologia
Ano de publicação:
2010
Tipo de documento:
Artigo
País de afiliação:
Brasil
/
França
Instituição/País de afiliação:
Universidade Federal do Oeste do Pará/BR
/
Université du Montpellier II/FR
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