在费城地区使用被动采样监测气体污染物
Bryan Terry1, Kabindra M Shakya1
1Department of Geography and the Environment, Villanova University, Villanova, Pennsylvania, USA.
Journal of the Air & Waste Management Association (1995)
|November 7, 2023
概括
空气污染影响城市和郊区. 这项研究监测了大费城地区的氧化,臭氧和氨,在郊区和城市地区发现度更高,交通排放显著影响氨水平.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 公共卫生 公共卫生
背景情况:
- 空气污染对人类健康和环境构成风险.
- 从历史上看,城市空气质量一直优先于郊区和半农村地区.
- 了解不同土地使用区域的污染对于全面的环境管理至关重要.
研究的目的:
- 评估大费城地区主要空气污染物 (NOx,O3,NH3,SO2) 的空间和季节性变化.
- 调查郊区和半农村地区的空气污染水平,这在监测中经常被忽视.
- 评估被动采样在各种环境中对空气质量评估的有效性.
主要方法:
- 使用Ogawa被动采样器测量氧化 (NO,NO2),二氧化硫 (SO2),臭氧 (O3) 和氨 (NH3) 的度.
- 在15个地点进行测量,代表大费城地区的城市,郊区和半农村土地使用情况.
- 从2021年9月到2022年5月收集的数据,涵盖了多个季节.
主要成果:
- 氧化物 (NOx) 的平均度在秋季观察到最高,而臭氧 (O3) 在春季达到峰值.
- 与半农村地区相比,郊区和城市地区的NOx度显著更高.
- 城市和郊区地区的氧化 (NO) 和氨 (NH3) 之间的正相关性表明交通排放有很大的影响.
结论:
- 被动采样是一种有效和经济的方法,用于监测不同土地使用区域的空间和季节性空气污染物变化.
- 费城附近的郊区和城市地区的氧化物水平较高,这表明交通排放的贡献很大.
- 该研究强调了监测大城市中心以外的空气质量的重要性,以保护更广泛的人口.
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