解释哥伦比亚北部大型露天煤矿中PM10污染的关键因素
Heli A Arregocés1, Luis A Ladino2, Erick Beristain-Montiel2
1Grupo de Investigación GISA, Universidad de La Guajira, Km 3 + 354 de La Vía Riohacha-Maicao, Riohacha, Colombia. harregoces@uniguajira.edu.co.
Environmental science and pollution research international
|April 11, 2025
概括
研究了哥伦比亚一座煤矿中的颗粒物 (PM10) 污染. 不铺路的道路和区域生物质燃烧显著影响了PM10水平,受天气条件的影响.
科学领域:
- 环境科学 环境科学
- 大气科学 大气科学
- 采矿工程 采矿工程 采矿工程
背景情况:
- 开放式煤矿开采活动是大气颗粒物的重要来源.
- 了解影响PM10度的因素对于采矿地区的环境管理和公共卫生至关重要.
研究的目的:
- 在哥伦比亚的一座露天煤矿中确定和量化影响PM10质量度的因素.
- 分析采矿活动,气象条件和区域来源对PM10水平的贡献.
主要方法:
- 在七个地点进行了为期3个月的监测活动 (2022年3月至5月),测量PM10.
- 使用WRF-CALPUFF建模系统进行气象学和源贡献分析.
- 使用X射线光分析了微量元素 (Fe,Cr).
主要成果:
- 记录了两个高PM10污染事件,与煤矿开采,大气稳定性,低行星边界层高度 (PBLH) 和生物质燃烧有关.
- 每天最大的PM10度达到60μg/m3.
- 未铺设的道路是PM10的主要来源;区域生物质燃烧也为此做出了贡献.
- 铁 (Fe) 和 (Cr) 的平均每日微量元素度最高.
结论:
- 未铺设的道路是矿区中最重要的PM10来源.
- 区域生物质燃烧是PM10变化的一个显著因素.
- 在露天采矿中,PBLH和风速是控制空气污染的关键因素.
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