The pollution status of ten potentially toxic elements (PTEs), isotopic compositions (Cu, Zn, Pb), and the potential ecological risk posed by them were investigated in the PM₁₀ fraction of road dust in Busan Metropolitan city, South Korea. Enrichment factors revealed extremely to strongly polluted levels of Sb, Cd, Zn, Pb, and Cu in the PM₁₀ fraction of road dust, with Sb levels being the highest. Statistical analyses showed that the major cause for contamination with PTEs was non-exhaust traffic emissions such as tire and brake wear. Cu and Zn isotopic compositions of road dust were related to traffic-related emission sources such as brake and tires. Pb isotopic compositions were close to that of road paint, indicating that Pb was a different source from Cu and Zn in this study. No significant health risk was posed by the PTEs. Taking into account the total length of road in Busan, a high quantity of PTEs in road dust (PM₁₀) can have serious deleterious effects on the atmospheric environment and ecosystems. The results of metal concentrations and isotopic compositions in road dust will help identify and manage atmospheric fine particle and coastal metal contamination derived from fine road dust.

中文翻译：

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韩国釜山道路粉尘 PM10 组分中潜在有毒元素的特征、风险评估和同位素组成（Cu-Zn-Pb）

在韩国釜山市道路灰尘的 PM ₁₀部分中调查了 10 种潜在有毒元素 (PTEs)、同位素组成 (Cu、Zn、Pb) 的污染状况以及它们带来的潜在生态风险。富集因子显示 PM ₁₀中 Sb、Cd、Zn、Pb 和 Cu 的污染程度极重或严重道路灰尘的一部分，其中 Sb 含量最高。统计分析表明，PTE 污染的主要原因是非尾气交通排放，如轮胎和刹车磨损。道路灰尘的铜和锌同位素组成与交通相关排放源（如刹车和轮胎）有关。Pb 同位素组成与道路涂料接近，表明 Pb 是本研究中与 Cu 和 Zn 不同的来源。PTE 没有造成显着的健康风险。考虑到釜山的道路总长度，道路扬尘（PM ₁₀) 会对大气环境和生态系统产生严重的有害影响。道路灰尘中金属浓度和同位素组成的结果将有助于识别和管理源自细小道路灰尘的大气细颗粒和沿海金属污染。