Quantitative Attribution of Secondary Organic Aerosol in Beijing to its Precursors

北京次生有机气溶胶前体的定量归因

• 批准号: NE/S006699/1
• 负责人: Roy Harrison
• 金额: $ 44.48万
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FS006699%2F1
• 关键词: Quantitative; Attribution; Secondary; Organic; Aerosol

Breathing particles in polluted air leads to the worsening of many health conditions and ultimately to premature death. The atmosphere of Beijing is well known for its very high concentrations of airborne particles and there is an urgent need for further control measures. A large proportion of those particles (referred to as "haze") are not emitted directly into the atmosphere but form within the atmosphere from chemical reactions of gases and vapours. This project is concerned with finding out which gases and vapours emitted into the atmosphere from road traffic, fuel burning, refuse incineration and many other sources are responsible for the formation of particles within the atmosphere of Beijing and the amount which they contribute to the concentration of particles. The scientific approach is to fill a reaction chamber with the vapours of a single chemical compound and let them undergo chemical reactions which lead to particle formation. The particles formed are then subject to very detailed chemical analysis and constituent molecules are identified which are characteristic of the compounds originally put into the chamber. Then, by making measurements of the same compound in the atmosphere, it is possible to estimate how much of the particles arise from the reaction of a particular gas. Control policies can then be formulated to reduce the emissions of those gases most responsible for particle formation.

呼吸污染空气中的颗粒会导致许多健康状况恶化，并最终导致过早死亡。众所周知，北京大气中的颗粒物浓度非常高，迫切需要采取进一步的控制措施。这些颗粒（称为“雾霾”）的很大一部分不会直接排放到大气中，而是通过气体和蒸汽的化学反应在大气中形成。该项目旨在查明道路交通、燃料燃烧、垃圾焚烧和许多其他来源排放到大气中的哪些气体和蒸汽导致了北京大气中颗粒物的形成，以及它们对空气中颗粒物浓度的贡献量。颗粒。科学方法是用单一化合物的蒸气填充反应室，让它们进行化学反应，从而形成颗粒。然后对形成的颗粒进行非常详细的化学分析，并识别出最初放入腔室中的化合物的特征组成分子。然后，通过测量大气中的相同化合物，可以估计有多少颗粒是由特定气体的反应产生的。然后可以制定控制政策，以减少那些对颗粒形成最有影响的气体的排放。

项目成果

Formation of secondary organic aerosols from anthropogenic precursors in laboratory studies

实验室研究中人为前体形成二次有机气溶胶

• DOI: 10.1038/s41612-022-00238-6
• 发表时间: 2022-03-24
• 期刊: npj Climate and Atmospheric Science
• 影响因子: 9
• 作者: D. Srivastava;T. Vu;Shengrui Tong;Zongbo Shi;R. Harrison
• 通讯作者: R. Harrison

Insight into PM2.5 Sources by Applying Positive Matrix Factorization (PMF) at an Urban and Rural Site of Beijing

在北京城乡应用正矩阵分解 (PMF) 洞察 PM2.5 来源

• DOI: 10.5194/acp-2020-1017
• 发表时间: 2021-04-07
• 作者: D. Srivastava;Jingsha Xu;T. Vu;Di Liu;Linjie Li;P. Fu;S. Hou;Zongbo Shi;R. Harrison
• 通讯作者: R. Harrison

An evaluation of source apportionment of fine OC and PM 2.5 by multiple methods: APHH-Beijing campaigns as a case study

多种方法对精细 OC 和 PM 2.5 源解析的评估：以 APHH-北京活动为例

• DOI: http://dx.10.48350/155723
• 发表时间: 2021
• 作者: Xu J

An evaluation of source apportionment of fine OC and PM2.5 by multiple methods: APHH-Beijing campaigns as a case study.

多种方法对细颗粒 OC 和 PM2.5 源解析的评估：以 APHH-北京活动为例。

• DOI: 10.1039/d0fd00095g
• 发表时间: 2020-11-26
• 期刊: Faraday discussions
• 影响因子: 3.4
• 作者: Jingsha Xu;D. Srivastava;Xue;S. Hou;T. Vu;Di Liu;Yele Sun;A. Vlachou;Vaios Moschos;G. Salazar;S. Szidat;A. Prévôt;P. Fu;R. Harrison;Zongbo Shi
• 通讯作者: Zongbo Shi

Characterization of products formed from the oxidation of toluene and m-xylene with varying NOx and OH exposure

不同 NOx 和 OH 暴露下甲苯和间二甲苯氧化形成的产物的表征

• DOI: http://dx.10.1016/j.chemosphere.2023.139002
• 发表时间: 2023
• 期刊: Chemosphere
• 影响因子: 8.8
• 作者: Srivastava D