Abstract
An effort to undersatnd the relationship between the measurement conditions (filter media, exhaust gas temperature, etc.) and the emission rates of certain vaporous metals (Cd, Pb, Zn, Cu, As) were performed at the refuse incinerator. The results may be summarized as follows:
(1) In the case that silica filters (thimble and circle filter) and silica wool were used to collect particle-form metals, the emission rates of vaporous cadmium and lead measured by silica wool (low in collection efficiency) were higher than those of silica filters (high in collection efficiency).
(2) In the case that sampling was performed in using of filters, the emission rates of vaporous cadmium, lead, and zinc were about 10% at the municipal refuse incinerator. But, the vaporous copper was not detected.
(3) The emission rate of vaporous cadmium from the refuse incinerator substantially increased as the exhaust gas temperature of measuring site increased from 240°C to 650°C.
(4) The vaporous arsenic was not detected (<0.01 mg/N3) in all the municipal refuse incinerators (8 facilities) aimed at this investigation.
