Distribuição de Zn, Pb, Ni, Cu, Mn e Fe nas frações do sedimento superficial do Rio Cachoeira na região sul da Bahia, Brasil

Química Nova

José Soares Dos Santos¹  Flávio Mendes De Souza¹  Maria Lúcia Pires Dos Santos¹ 

[1] ,Universidade Estadual do Sudoeste da Bahia Departamento de Ciências Naturais Vitória da Conquista BA ,Brasil

关键词: toxic element;    availability of metals;    sediment samples;   

DOI  :  10.1590/S0100-40422013000200005

来源: SciELO

【 摘 要 】

The metal distribution in the surface sediment fractions of the Cachoeira River was evaluated based on the fractionation method using a five-step sequential extraction. The determination of metals was made by flame atomic absorption spectrophotometry (F AAS). Zn, Pb and Cu exhibit higher concentrations in the residual fraction of the sediment from sites that receive discharges from urban and industrial zones. High levels of Ni (60 ± 1 to 447 ± 9 µg L-1) were found in the river water, which may be detrimental to the "health" of rural communities that utilize the river water for domestic purposes without treatment.

【 授权许可】

CC BY-NC   
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