Sources of heavy metals (As, Cd, Co, Cr, Cu, Mn, Ni, Pb and Zn) in the road dust of Bandar Abbas city, Iran, and its west suburb were apportioned and the related source-specific ecological and health risks were assessed. The level of heavy metal pollution and the related ecological risk for suburban road dust (suburban RD) were far higher than those of urban RD. Accordingly, probabilistic health risk assessment showed no significant health risk in urban region but significant health risk in the suburb, especially for As with cancer risk above 10⁻⁴. Source apportionment using positive matrix factorization (PMF) identified lithogenic source (45.9%) and traffic emission (47.6%) as the main sources of heavy metals in urban and suburban regions, respectively. However, the industrial/construction activities showed the main contribution in ecological risk in both regions. On the other hand, the health risks in urban and suburban regions were mainly attributed to lithogenic source (49.7% for non-cancer risk and 36.8% of cancer risk) and traffic emission (69.4% of non-cancer risk and 46.6% of cancer risk), respectively. The sensitivity analysis showed that the Pb and As originated from traffic emission had the most impact on the non-cancer and cancer risks, respectively, in the suburb. Therefore, this study highlighted the concern about traffic emission as a critical heavy metal source in the road dust of Bandar Abbas suburb.

伊朗班达阿巴斯市及其西郊道路尘埃中的重金属（砷，镉，钴，铬，铜，锰，镍，铅，锌和锌）的来源被分摊，并且相关的特定来源的生态和健康风险被评估。重金属污染水平和郊区道路扬尘（郊区RD）的相关生态风险远高于城市RD。因此，概率性健康风险评估显示，在城市地区没有显着的健康风险，但在郊区则存在显着的健康风险，尤其是对于癌症风险高于10 ^-4的砷。使用正矩阵分解（PMF）进行源分配，分别将成岩源（45.9％）和交通排放（47.6％）分别作为城市和郊区的重金属主要来源。然而，工业/建筑活动在两个地区都表现出对生态风险的主要贡献。另一方面，城市和郊区的健康风险主要归因于致石源（非癌症风险占49.7％，癌症风险占36.8％）和交通排放（非癌症风险占69.4％，癌症占46.6％）。风险）。敏感性分析表明，来自交通排放的铅和砷分别对郊区的非癌症和癌症风险影响最大。因此，