确定了最佳的活性控制途径,以在欧洲具有成本效益的PM2.5减轻PM2.5
Zehui Liu1,2, Harald E Rieder3, Christian Schmidt3
1Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, 100871, China.
Nature communications
|July 17, 2023
概括
减少反应性 (Nr) 排放,如氧化 (NOx) 和氨 (NH3),大大减少了欧洲的细颗粒物 (PM2.5) 空气污染. 对于PM2.5的缓解,氨的控制比NOx的控制更具成本效益.
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:
- 过多的活性 (Nr),包括氧化 (NOx) 和氨 (NH3),是欧洲细颗粒物 (PM2.5) 空气污染的主要原因之一.
- 这种污染对整个非洲大陆的公共卫生构成了重大挑战.
研究的目的:
- 确定最佳和成本有效的反应性 (Nr) 控制路线图,以减轻欧洲PM2.5空气污染.
- 评估不同 Nr 控制策略的缓解效率和实施成本.
主要方法:
- 整合排放估计,空气质量建模和暴露死亡率建模.
- 包括活性 (Nr) 控制实验和成本数据分析.
- 对氨 (NH3) 和氧化 (NOx) 控制效率和成本效益的比较评估.
主要成果:
- 逐步淘汰Nr排放可以使欧洲PM2.5减少2.3±1.2μg·m-3,有助于实现世卫组织指导方针,并预防近10万例过早死亡.
- 氨 (NH3) 控制显示效率越来越高,雄心勃勃,变得比NOx控制更有效.
- 对于每单位的PM2.5减少,NH3控制的成本效益比NOx控制高5至11倍,特别是高达50%的减少.
结论:
- 对于在欧洲具有成本效益的PM2.5缓解,应优先考虑氨 (NH3) 控制政策.
- 通过改善空气质量,战略性减排为公众健康带来了巨大的好处.
- 最佳的Nr控制途径涉及转向优先考虑氨 (NH3) 减少策略.
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