The impacts on environment of coal-fired thermal power plants are associated with combustion products discharged into their surrounding. To summarize the mobility rule of trace elements during the combustion process of coal and make clear the migration mechanism in Huainan thermal power plants, the content of elements was determined by ICP-AES and HG-AFS. In the case of Huainan thermal power plants, the results is that, the trace elements condense on smaller particles except for Mn captured in ash sediments, because of its geo-chemistry and mode of occurrence in coal; the relative enrichment(RE) factors of As, Zn are higher, and are respectively 2.23 and 9.763 of f-ash of Tainji plant; As, Ba, Co, Cr, Ni, Se, Ti are positively correlative with ash content, indicating that most of them are occurred in coal in the mode of inorganic matters; Ni, Ti are highly positively associated with Fe, indicating those are mainly occurred in sulfide; moreover, the mobility behavior of elements is intimately related to the combustion condition a
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