Abstract:A total of fourteen sensitive points around a municipal solid waste incinerator (MSWI) within 5km were selected to conduct soil monitoring of PCDD/Fs. The concentrations of special distribution, congener and homologue profiles and principal component analysis were carried out to assess the soil environmental impact of the MSWI. Based on the results, it was found that :(1) the concentration of PCDD/Fs in the sample collect from plant area was the highest (20.8I-TEQng/kg), but the rest were all in a relative low and safe levels (0.66-7.11I-TEQng/kg); (2) OCDD was the most significant contributor in congener and homologue profiles of all the samples, which implied the limited effect from the MSWI; (3) traffic emission but not this MSWI was the primary contributor of PCDD/Fs in the study field through principal component analysis.