Competition Between Humic Substances and α-Amino Acids by Metal Species
نویسندگان
چکیده
O objetivo deste trabalho foi comparar a complexação de substâncias húmicas (SH) e α-aminoacidos (metionina, metionina sulfoxido e cloridrato de cisteína) por elementos traço de interesse biológico (Al, Cu, Pb, Mn, Zn, Cd e Ni). Sistema de ultrafiltração tangencial foi utilizado para diferenciação entre os complexos SH-metal e α-aminoácidos-metal. As determinações de metal foram feitas utilizando ICPOES. Os resultados mostraram que as SH podem ser consideradas agentes complexantes seletivos com alta capacidade de complexação a Al, Cu e Pb, podendo ser clinicamente importante.
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