在东北季风期间,PCDD/F和PCB通过云水清理
Lin-Chi Wang1, Latonia Nur Adyanis2, Otto Klemm3
1Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, 142, Haijhuan Road, Nanzih District, Kaohsiung 81157, Taiwan.
Journal of hazardous materials
|February 26, 2025
概括
云/雾水有效地清除化持久有机污染物 (Cl-POPs),其度和效率高于降水. 这凸显了它们在大气污染物运输和潜在的环境健康影响中的重要作用.
科学领域:
- 环境化学环境化学
- 大气科学 大气科学
- 污染物运输 污染物运输
背景情况:
- 关于云/雾水中的化持久有机污染物 (Cl-POPs) 的研究有限.
- Cl-POPs包括多化二子-p-二氧化和二酸 (PCDD/F) 和类似于二氧化的多化双 (PCB).
研究的目的:
- 研究Cl-POPs在云/雾水中的特性,分区和清理效率.
- 为了比较云/雾水与降水之间的Cl-POP清理.
主要方法:
- 在山上部署主动和被动的云/雾收集器. 竹子,台湾. 这是.
- 在2018-2019年东北季风期间收集和分析云/雾水样本.
- 量化Cl-POPs,区分粒子结合和溶解相.
主要成果:
- 云/雾水的Cl-POP度明显高于降水.
- PCDD/F主要是颗粒结合的 (79%),而PCB主要是溶解的 (>50%).
- 云/雾水中PCDD/Fs的清理比率 (10^4-10^7) 超过了降雨中的比率 (10^3-10^5).
结论:
- 云/雾水在清理大气中的Cl-POP中起着至关重要的作用.
- 这些发现表明,这些污染物可能通过云/雾来进行远程运输.
- 了解这一过程对于评估环境和人类健康风险至关重要.
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