Because of the complex composition in MSW

secondary pollution of heavy metals in the process of MSW incineration is the most difficult problem to be solved in MSW disposal. Then

the influence factors in many aspects

such as the sources of heavy metals the characteristics of transfer and conversion of heavy metals in the process of MSW incineration

as well as the mechanisms of heavy metal transfer and distribution in the said process etc.

have been studied. Results of study show

the final distribution of heavy metals in the incinerator was influenced by the characteristics of the heavy metals proper （i. e. Pressure of vaperization and boiling point）

in addition

it is also related with the original composition of MSW and the environment of incineration.