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中国武汉地铁中细颗粒物质的特征,来源和健康风险

Ji-Liang Lü¹, Qing Han², Zhen Wang³

¹Wuhan Center for Disease Prevention and Control, Wuhan 430022, China; School of Environmental Science and Engineering / Hubei Key Laboratory of Mine Environmental Pollution Control & Remediation, Hubei Polytechnic University, Huangshi 435003, China.

The Science of the total environment

|February 16, 2025

概括

地铁站中的PM2.5结合金属因地点和时间而异,造成健康风险. 铁路和车轮磨损是这些金属的主要来源,导致工人致癌风险.

科学领域:

环境科学环境科学
公共卫生公共卫生
毒理学毒理学毒理学

背景情况:

地铁大气中的颗粒物质 (PM2.5) 结合金属是引起严重关注的,因为它们对公众健康的影响.
了解这些金属的空间和时间变化对于评估通勤者和工人的健康风险至关重要.

研究的目的:

描述和绘制地铁站内PM2.5结合金属的分布.
确定这些金属污染物的主要来源.
进行健康风险评估,整合来源分配和特定元素分析.

主要方法:

从中国武汉的十七个地铁站的地铁入口和平台收集PM2.5样本.
用丰富因子 (EF) 和正矩阵因子 (PMF) 来识别来源的15种金属的分析.
对地铁工作人员和乘客的非致癌和致癌健康风险的评估.

主要成果:

铁 (Fe) 是最丰富的金属,在平台上的度明显高于入口.
鉴定了六种不同的金属元素来源,其中人为来源,特别是铁路和车轮磨损,占主导地位.
(Cr) 和 (As) 构成致癌风险,主要与铁路/车轮来源和燃煤有关.

结论:

地铁站环境在PM2.5结合的金属中显示出显著的空间和时间变化.
人为活动,特别是与火车运营相关的活动,是金属污染的主要原因.
专注于铁路和车轮磨损的有针对性的缓解策略对于降低地铁工作人员的健康风险,特别是致癌风险至关重要.

关键词:

评估健康风险评估健康风险在PM{2.5) 中,有关PM(2.5) 的金属.来源分配的分配方式地铁站地铁站.

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