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儿童园重金属的风险评估和污染驱动因素是复杂化尘埃

Peng Wang¹, Jian Hu², Qian Zhang³

¹State Key Laboratory of Geomicrobiology and Environmental Changes, China University of Geosciences (Beijing), Beijing 100083, PR China; Institute of Earth Sciences, China University of Geosciences (Beijing), Beijing 100083, PR China; Frontiers Science Center for Deep-time Digital Earth, China University of Geosciences (Beijing), Beijing 100083, PR China; State Key Laboratory for Ecological Security of Regions and Cities, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.

Journal of hazardous materials

|March 6, 2025

概括

大城市的幼儿园灰尘 (KRD) 显示出高重金属 (HM) 污染,特别是,和. 考虑生物可访问性 (BA) 提供了精确的健康风险 (HR) 评估,与总度方法不同.

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:

幼儿园再悬浮尘 (KRD) 中的重金属 (HM) 污染对健康构成重大风险 (HRs).
准确的评估需要评估HM生物可访问性 (BA) 并确定污染驱动因素.
幼儿园是儿童接触污染物的敏感环境.

研究的目的:

调查HM污染水平和KRD在一个大城市内的司机.
为了评估以内容和来源为导向的HR,考虑HM BA.
确定影响KRDHM空间变化的因素.

主要方法:

在KRD样本中分析HM污染水平和BA.
使用总度和BA调整方法评估HRs.
统计分析以确定HM空间分布的驱动因素.

主要成果:

在KRD的样本中,有 (Cd), (Cr) 和 (Ni) 的严重污染.
在模拟的胃状况下,HM BA比由于酸度而导致的肠道状况更高.
工业来源是Cr和Ni致癌风险的主要贡献者.
基于总HM度的HRs显著高估了风险;BA考虑产生了精确的结果.
Cr和Ni的空间变化与道路密度和工业产出有关;Cd变化受到海拔,人口密度和道路密度的影响.

结论:

精确的健康风险评估HM在KRD需要考虑生物可访问性.
工业活动和城市因素在很大程度上推动了HM污染和空间分布.
有效的健康风险管理策略必须针对特定的HM,其来源和暴露途径.

关键词:

生物可访问性生物可访问性驱动因素驱动因素尘埃尘埃的尘埃,就是我们的尘埃.危害健康的风险健康风险重金属是一种重金属.

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