Transformation of metal speciation under an action of the aquatic vegetation in flooded gold-ore cyanidation tailings

摘要

In the tailings of cyanidation waste of gold-arsenic-quartz ores (Komsomolsk deposit, West Siberia) the most dangerous elements are arsenic and antimony. They release easily duriing the storage period and form very high concentration in the solution (surface pond water, pore water of sediments, underground water). It was revealed that the intensity of arsenic and antimony leaching differs in the different parts of the pond, depending on physical-chemical condition and action of biogenic factors. Role of the aquatic vegetation is important at accumulation of these toxic elements and at burial they into sediments.