Geochemistry behavior of trace elements in bastard coal

It is analyzed that geochemistry behavior of trace elements which take place during vanning and leaching in the bastard coal in the Mine of Yanzhou coal mining area.It can be found that the value of pH can affect the dropping out of the trace element from the bastard coal when using different pH values.And the concentration of the trace element in the soil has a decline trend with distance increasing from the bastard coal.