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亚洲不同国家的PAH悬浮颗粒的时空空间变化和风险评估:来自多个城市采样和来源分配的见解

Kai Hsien Chi¹, Yen-Shun Hsu¹, Sheng-Lun Lin²

¹Institute of Environmental and Occupational Health Sciences, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan.

Environmental research

|July 13, 2025

概括

亚洲城市的颗粒物 (PM) 含有来自车辆排放和尘暴的有毒多环芳 (PAH). 终身癌症风险超过安全水平,迫切需要采取污染控制战略.

科学领域:

环境科学环境科学
毒理学毒理学毒理学
公共卫生公共卫生

背景情况:

颗粒物 (PM) 空气污染对全球健康构成重大风险,特别是在快速城市化的亚洲城市.
这些城市的极端污染事件往往具有独特的化学特征和与当地人类活动相关的来源.

研究的目的:

评估与来自亚洲城市各种人为来源的颗粒物 (PM) 相关的多环芳 (PAH) 的毒性和致变性特征.
评估这些污染物带来的生态和吸入癌症风险.

主要方法:

在2019-2023年期间,在亚洲多个城市采集了环境PM样本,采用了大量的样本.
分析包括多环芳 (PAH),重金属和水溶性离子 (WSI).
生态和终身吸入性癌症风险评估是根据测量PAH度计算的.

主要成果:

在清迈和河内记录了PM2.5和PAH BaP-TEQ水平的升高;台北显示度较低.
乌兰巴托和北京的沙尘暴事件显著增加了总悬浮颗粒 (TSP) 和PAH水平.
来源分配 (PMF) 显示,乌兰巴托,清迈和河内的车辆提供了相当大的贡献 (47.5-79.8%).

结论:

生态风险评估通常表明毒性低 (RI <150).
然而,在几个研究的城市,终身吸入癌症风险 (LICR) 值超过了可接受的门 (10^-6).
这些发现凸显了对亚洲城市地区有针对性的空气污染控制战略的迫切需要.

关键词:

沙尘暴是一个尘暴.影响健康影响健康影响在PM中{2.5)多环芳香碳化合物多环芳香碳化合物悬浮颗粒总量悬浮颗粒总量交通交通交通流量

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