作为有机气溶来源,导致城市空气质量恶化
I Stavroulas1, A Bougiatioti2, G Grivas2
1Institute for Environmental Research and Sustainable Development, National Observatory of Athens, 15236 Palea Penteli, Greece; Climate and Atmosphere Research Center, The Cyprus Institute, 2121 Nicosia, Cyprus; Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, 71003 Heraklion, Greece.
The Science of the total environment
|October 27, 2023
概括
在希腊的节日期间,大量的排放会显著增加颗粒物 (PM) 和有机气溶 (OA) 水平,特别是PM2.5.5. 减轻这些排放对于改善城市空气质量至关重要.
科学领域:
- 大气化学 大气化学
- 环境科学 环境科学
- 空气质量监测 空气质量监测
背景情况:
- 城市空气质量受到人为气溶来源的影响,特别是燃烧.
- 涉及大量的传统节日可能导致严重的空气污染事件.
研究的目的:
- 调查希腊庆祝活动期间大规模排放对颗粒物 (PM) 和有机气溶 (OA) 源的影响.
- 在这些事件中描述有机气溶 (COA) 的空间和时间模式.
主要方法:
- 使用的气溶化学特异监测 (ACSM) 数据用于通过正矩阵分解 (PMF) 来分配OA源.
- 采用低成本基于传感器的PM2.5网络来评估空间污染特征.
- 分析了六年的数据,重点关注周围的时期.
- 脂肪星期四 脂肪星期四
- 和复活节星期天,包括COVID-19移动限制影响.
主要成果:
- 鉴定出了一种独特的COA光谱形状,来自肉类烤.
- 记录了超过300μg m−3的PM2.5严重污染事件.
- 首次有机气溶 (POA) 在COA中占主导地位,占OA总量的近一半.
- 在夜间,COA在夜间达到峰值.
- 脂肪星期四 脂肪星期四
- 在复活节星期天的下午早些时候.
- 雅典市中心周末COA度上升表明了娱乐模式.
结论:
- 排放,特别是传统节日和餐饮服务行业的排放,是城市空气污染的主要原因之一.
- 减轻排放是一种可行的策略,可以实现大幅改善空气质量.
- 调查结果支持需要更严格的欧盟空气质量指令和有针对性的排放控制措施.
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