Interaction between humic substances and metallic ions: A selectivity study of humic substances and their possible therapeutic application

The complexation capacity of humic substances extracted from peat samples taken from the Mogi River in Ribeirao Preto, SP, Brazil, was determined using metal ions (Al(III), Pb(II), Cr(VI) and Cd(II)), yielding the following order of affinity: Cr(VI)< Cd(II)<Pb(II)<Al(III). An oral LD50 test...

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Detalles Bibliográficos
Autores: Dos Santos, Ademir [UNESP], Botero, Wander Gustavo [UNESP], Bellin, Iramaia Corrêa [UNESP], De Oliveira, Luciana Camargo [UNESP], Rocha, Julio Cesar [UNESP], Mendonça, André Gustavo Ribeiro [UNESP], Godinho, Antonio Francisco [UNESP]
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2007
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/69880
Acceso en línea:http://dx.doi.org/10.1590/S0103-50532007000400023
http://hdl.handle.net/11449/69880
Access Level:acceso abierto
Palabra clave:Humic substance
Metals
Potentially toxic metals
Toxicology
Descripción
Sumario:The complexation capacity of humic substances extracted from peat samples taken from the Mogi River in Ribeirao Preto, SP, Brazil, was determined using metal ions (Al(III), Pb(II), Cr(VI) and Cd(II)), yielding the following order of affinity: Cr(VI)< Cd(II)<Pb(II)<Al(III). An oral LD50 test showed that these humic substances are nontoxic up to a maximum concentration of 512 mg kg-1. These findings reinforce the possibility of using humic substances as a metal detoxicant. ©2007 Sociedade Brasileira de Química.

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