Complexation of Mercury to Dissolved Organic Matter Isolated from an Anthropized Aquatic Ecosystem

摘要

The strong interactions of mercuric (Hg~(2+)) ions with dissolved organic matter (DOM) exert important controls on the mercury (Hg) fate, distribution and speciation in the aquatic systems. To obtain representative stability constants, we probed the binding affinity of Hg~(2+) with natural and urban DOM fractions of humic and non-humic substances.