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Ruifei Li¹, Yu Luo¹, Xu Zhu¹

¹School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.

|July 27, 2024

概括

COVID-19封锁减少了埃尔贝河的多环芳 (PAH) 污染,但人类活动反弹了增加的PAH水平. 更清洁的生产是减轻水中PAH污染的关键.

科学领域:

环境化学环境化学
生态毒理学生态毒理学
河流污染的动态河流污染的动态

背景情况:

冠状病毒疾病2019 (COVID-19) 封锁在全球范围内显著减少了人类活动.
多环芳 (PAH) 是燃烧产生的致癌污染物,但它们在COVID-19反应期间的污染动态尚不清楚.
了解人类活动转移对PAH污染的影响对于环境管理至关重要.

研究的目的:

为了量化COVID-19封锁限制对16PAH污染在埃尔贝河的影响.
为了确定锁定期间PAH来源贡献的变化以及随后的活动反弹.
评估不同年龄组的相关健康风险.

主要方法:

2015年至2021年水和悬浮颗粒物 (SPM) 中16PAH度的分析.
应用来源分配方法来确定占主导地位的PAH来源.
根据PAH暴露水平评估潜在的健康风险.

主要成果:

年平均PAH度在水中为0.055 μg·L−1和在SPM中为3.77 mg·kg−1.
在德国的封锁期间 (2020-2021年),SPM上的PAH下降了高达18%.
在封锁解除后,PAH度反弹高达29%;车辆排放量下降,而煤炭排放量增加了5%.
潜在的健康风险从2015年的1.54×10−4下降到2019年的1.27×10−4,然后在2020-2021年恢复到1.40×10−4.

结论:

气污染水平与人为活动强度有很强的相关性.
车辆和煤炭排放是埃尔贝河中PAH的主要来源.
通过更清洁的生产来控制来源是减轻水中PAH污染的有效策略.

关键词:

人类活动人类活动锁定封锁锁定封闭长期的长期的长期的多环芳香碳化合物多环芳香碳化合物风险评估风险评估风险评估来源分配的分配方式

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