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.

吸入污染空气中的颗粒物会导致许多健康状况恶化，最终导致过早死亡。众所周知，北京的大气中悬浮颗粒物浓度很高，因此迫切需要采取进一步的控制措施。这些颗粒物中有很大一部分（称为“霾”）不是直接排放到大气中，而是在大气中通过气体和蒸汽的化学反应形成的。该项目的目的是找出从道路交通、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气是北京大气中颗粒物形成的原因，以及它们对颗粒物浓度的贡献量。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组成分子。然后，通过测量大气中的相同化合物，就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，以减少对颗粒形成最负责任的那些气体的排放。

项目成果

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

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

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: 10.48350/155723
• 发表时间: 2021
• 作者: Xu J

Abrupt but smaller than expected changes in surface air quality attributable to COVID-19 lockdowns.

• DOI: 10.1126/sciadv.abd6696
• 发表时间: 2021-01
• 期刊: Science advances
• 影响因子: 13.6
• 作者: Shi Z;Song C;Liu B;Lu G;Xu J;Van Vu T;Elliott RJR;Li W;Bloss WJ;Harrison RM
• 通讯作者: Harrison RM

Frontier review on comprehensive two-dimensional gas chromatography for measuring organic aerosol

• DOI: 10.1016/j.hazl.2021.100013
• 发表时间: 2021-11
• 作者: Zhaojin An;Xue Li;Zongbo Shi;B. Williams;R. Harrison;Jingkun Jiang

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

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