中文摘要：

为了解呼吸暴露途径下污染场地静态扬尘对人体健康的影响,以空气动力学气固两相理论为基础,预测露天堆场近地面扬尘中PM10浓度。并以《污染场地风险评估技术导则》（HJ 25.3-2014）推荐的暴露评估模型和美国环保局推荐的人体健康风险评估模型,评估Cd、Cr、As、Ni和Hg对人体健康的危害。结果表明：研究区域重金属的致癌风险和非致癌风险与近地面PM10浓度呈现线性增加的趋势,下风向的居住区、商业区和旅游区PM10浓度达到0.30、0.30和0.15 mg·m-3。健康风险评估结果表明,当PM10浓度〉0.05 mg·m-3时,As、Cd、Cr暴露致癌发生率（R）均超过10-6,对暴露人群有致癌风险。当PM10浓度〉0.2 mg·m-3时,Cd和As的非致癌危害商超过阈值1,对人体健康存在威胁。Ni和Hg风险评估结果均低于风险阈值,风险水平较低。

英文摘要：

To research static dust,its influence on exposed breathing pathways,and its hazards to human health around a typical open-air industrial pollution area,a prediction model of PM10 concentration near the ground was proposed,based on the two phase gas-solid aerodynamic theory. The carcinogenic and non-carcinogenic risks of Cr,Cd,As,Hg,and Ni were analyzed in the study area using the exposure assessment model from China＇s Technical Guidelines for Risk Assessment of Contaminated Sites（ HJ 25. 3-2014） and the human health risk assessment model from the United States Environmental Protection Agency（ USEPA）. The results show that carcinogenic risks and noncarcinogenic risks had a positive linear relationship with PM10 concentration,and the PM10 concentrations of residential,commercial,and tourist areas were 0. 30,0. 30 and 0. 15 mg·m- 3,respectively. The results of the health risk assessment show that the carcinogenic risk of As,Cd,and Cr exceeded the acceptable levels（ 10- 6） when the PM10 concentration 0. 05 mg·m- 3,and the noncarcinogenic risk of Cd and As were greater than the threshold value（ 1） when the PM10 concentration 0. 2 mg·m- 3. The risk assessment results of Ni and Hg were lower than the risk threshold,which indicates low risk of threat to human health.