Abstract
The interaction of tailings fine fraction (-0.071 mm) of loparite, complex and apatite-nepheline ores with solutions simulating soil waters was experimented in laboratory conditions. Applying the phytotesting method, the toxic effect of an aqueous extract of a loparite and complex ores tailings fine fraction on the growth and development of higher plants was determined. It was found that introduction of dissolved organic matter intensifies the process of rare and non-ferrous metals transition into soluble forms. At the same time, concentrations of pollutants in solutions after five hours of interaction by several times exceed the maximum permissible figures for fishery farms. The research results indicate the environmental hazard of tailings fine fraction as a result of the ingress of mineral particles into the soil and their interaction with soil waters.
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