In Taiwan，because the prices of plastics is inexpensive，and
people use the plastics widespread，so there have a large of
discard. The process of making plastics to use the metal for
the additives of plastics.The metal must scatter in bottom ash
and fly ash if we use the incineration technology to treatment
Wastesastes，and there will produce dangerously for environment
if we do not have to treatment these ashes. If we would be to
mitigate the harm of the metals for environment，the first，it
have to understand that the behavior of metals，the effect of
operational factor when the waste was incinerated.The paper was
to study the effect of temperature and the ratio of gases （N2
and O2） to metal distributions when e use the incineration
technology to treat the plastics. The results indicated that （1
）When operational temperature was uperaise，the ratio in fly
ash of Lead was upraise，and when we used high temperature to
incinerate the plastics，the temperature was uperaise，the
ratio in fly ash of Cadmium was upraise.（2）When we used high
concentration of oxygen to incinerate the plastics，the Percent
volatilization of Lead would be restrained，and in high
temperature，the Cadmium will have the similar condition.
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