Аннотация:The hydrological and hydrochemical characteristics of Tugnui river basin, affected
by coal mining activity were obtained. Water turbidity, concentrations of major ions,
nutrients and trace elements have changed dramatically. During low water period the
effect of mining has been traced over 24 km downstream, increased concentrations of
toxic substances were found mainly in dissolved forms. The concentrations decreased
in the lower part of the basin owing to dilution and complexation with organic matter,
since the hydrochemical transformation was insignificant.
Keywords: coal mining, Baikal, water chemistry, trace elements, pollution, sediments
