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危险废物热处理设施附近的固态颗粒物成分的空间分布

Chuqi Guo¹, Oluwafeyikemi Ogunmusi², Martine E Mathieu-Campbell³

¹Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, USA.

Environmental pollution (Barking, Essex : 1987)

|December 13, 2025

概括

开放式燃烧/开放式引爆 (OB/OD) 危险废物操作影响空气质量,在路易斯安那州的一个设施附近检测到PM2.5和高重金属的热点. 这项研究揭示了过度负担的社区中的污染物模式和健康风险.

科学领域:

环境科学环境科学
公共卫生公共卫生
大气化学大气化学

背景情况:

危险废物开放式燃烧/开放式引爆 (OB/OD) 存在重大环境和公共卫生问题.
路易斯安那州的科尔法克斯是美国最后一家商业性OB/OD设施的所在地,影响着一个农村,历史上负担过重的社区.
居民对空气质量和与OB/OD运营相关的健康风险的担忧是长期存在的.

研究的目的:

在洛杉矶科尔法克斯的OB/OD设施附近进行第一个为期一年的,空间分辨的环境空气污染物组成评估.
描述PM2.5的分布,环境持久性自由基 (EPFR) 和重金属.
调查不同污染物之间的空间和时间相关性,以及它们与OB/OD操作的距离.

主要方法:

在四个季节性季度 (2022年3月至2023年3月) 在十个地点部署被动采样器和低成本PurpleAir传感器.
对PM2.5,EPFR和重金属 (包括Cr,Ni,Al,Fe,Ba,Mg,Mn) 的监测.
空间分辨率分析以确定污染物热点和时间趋势.

主要成果:

在该设施附近观察到明显的PM2.5热点,特别是在3月至6月和12月至3月期间.
从6月到9月,EPFR与PM2.5的空间相关性最强.
较高的EPFR与高的Cr和Ni水平 (九月至十二月) 相吻合,而Al/Fe是最丰富的金属. 远离该设施的地点显示Al,Ba,Fe,Mg,Mn和EPFR的持续升高.

结论:

该研究提供了对OB/OD操作中的空气污染物的空间和时间行为的关键见解.
被动采样在复杂,资源有限的现场条件下进行监测是有效的.
调查结果强调了附近社区的潜在空气质量和健康风险,特别是在历史上过度负担的地区.

关键词:

参与社区研究的研究.在环境中持久的自由基.重金属是一种重金属.军用废物军用废物军用废物开放式燃烧/开放式爆炸在PM中{2.5)被动抽样是一种被动抽样.

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