The mean PCDD/F concentrations in ambient air nearby Muzha, Taonan, Chunan and Yongkang municipal solid waste incinerators (MSWIs) are 0.0338, 0.0967, 0.0331 and 0.0368 pg I-TEQ/Nm3, respectively. The mean PCDD/F contents in Ficus leaves nearby these three MSWIs are 2.16, 8.04, 1.69 and 2.41 pg I-TEQ/g, respectively. The mean PCDD/F contents in soil nearby these three MSWIs are 1.77, 3.49, 0.549 and 0.757 pg I-TEQ/g, respectively. By comparing the PCDD/F concentration of maximum ground concentration sampling sites, upwind sampling sites and downwind sampling sites, the distribution of the PCDD/F concentration isopleths in the atmosphere and the result of PCA and Cluster Analysis, the PCDD/F influence from MSWIs on nearby ambient air, vegetation and soil is not obvious, however, some sampling sites which are around by other stationary emission sources are found with elevated PCDD/F level. After six year’s operation, the dioxin level of ambient air, vegetation and soil nearby Muzha and Taonan MSWI still maintain in the same level. By analyses with the t test, there is no significant difference on the dioxin level after six years operation.

incinerator,dioxin,ambient air,vegetation,soil