Análise da interação entre substâncias húmicas e xenobióticos através de estudos ecotoxicológicos: propostas para a geração de tecnologias de detoxificação aquática / Study of humic substances and xenobiotics interaction using ecotoxicological studies: aquatic detoxification technologies purposes
AUTOR(ES)
Domingos Sávio Barbosa
DATA DE PUBLICAÇÃO
2008
RESUMO
This study focuses the interaction of humic substances and xenonbiotics, throw ecotixicological studies. The main point was quantify and qualify the ecotoxicological responses of several throphic levels of freshwater (algae, zooplankton, fishes and benthic organisms) and soil organisms (higth plants, insects and annelids) analyzing the direct and indirect effects of humic substances (HS) and their mixture on organisms. The recognized ability of HS on improve or reduce the toxic effect of same substances has been studied. The main points of discussion are: a) humic can be both reduce or stimulate the algal growth (P. subcapitata); b) The presence of HS can be protect aquatic organisms to negative effects of metals. However, the presence of mixture of Cd/Cu affect negatively the growth of C. xanthus; d) In a integrated analysis of remediation process in soil/water microcosm, the presence of HS displayed negative or positive effects on atrazine toxicity for some organisms. The value of humic technology was discussed.
ASSUNTO(S)
avaliação de risco solo e água detoxificação ecotoxicology ecotoxicologia substâncias húmicas detoxification humic substances ecological risk assessment
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