Contaminação por mercúrio em ecossistemas aquáticos: uma análise das áreas críticas

摘要: Mercury contamination in aquatic ecosystems Brazil is discussed by comparing the biogeochemical characteristics resulting increasing mobilization and bioavailability to food chains eventually human exposure mercury. We compare key Amazonian systems some estuaries, which due high complexing capacity of Hg dissolved organic matter; maintain elevated concentrations mercury under readily bioavailable forms, able undertake methylation biomagnification through chains.