The Formation and Characterisation of Secondary Organic Aerosol and its Contribution to PM10 Concentrations in the UK Atmosphere

二次有机气溶胶的形成和表征及其对英国大气中 PM10 浓度的贡献

基本信息

批准号：
NE/E006515/1
负责人：
Roy Harrison
金额：
$ 9.87万
依托单位：
University of Bristol
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2008
资助国家：
英国
起止时间：
2008 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FE006515%2F1
关键词：
Formation Characterisation Secondary Organic Aerosol

项目摘要

Air pollution has important adverse effects on the health of the public. These include premature mortality, additional hospital admissions and worsening symptoms for people with respiratory diseases such as asthma. A number of pollutants are responsible for these effects but the one with the biggest impact is known as particulate matter. This term describes tiny particles invisible to the naked eye floating in the air, which can be breathed into the lungs. These particles arise from a range of sources, the best known being road traffic. However, emission sources are not the only source of particles and a contribution of growing importance is from particles which form in the atmosphere from chemical reactions of gases. These include chemical substances known as sulphates and nitrates, which form from emissions of sulphur dioxide and oxides of nitrogen by pathways that are reasonably well understood. In addition, there is a class of chemical substances within airborne particles known as secondary organic compounds. These are formed through chemical processing in the atmosphere of organic vapours arising from both manmade sources (e.g. petrol vapour) and natural sources, especially from compounds released by trees. These secondary organic compounds are very diverse in their chemical composition and their contribution to the mass of particles in the air is not well understood. This project is concerned with measuring secondary organic compounds in the atmosphere of the UK, so as to estimate their contribution to the total amount of airborne particles. In addition, the project will measure the chemical composition of such particles, and use this to understand which organic vapours they are formed from. Through such studies it will be possible to infer which parts of the secondary organic compound mass can be controlled through abatement of anthropogenic sources, and which part arises from natural compounds released from vegetation, which is not readily amenable to control.

空气污染对公众的健康有重要的不利影响。这些包括过早死亡率，额外的住院入院以及呼吸道疾病患者（如哮喘）的症状恶化。许多污染物负责这些影响，但影响最大的污染物称为颗粒物。该术语描述了空气中漂浮在空气中的肉眼看不见的微小颗粒，可以将其呼吸到肺部。这些颗粒来自一系列来源，最著名的是道路交通。但是，发射源并不是颗粒的唯一来源，而重要性的贡献是来自气体化学反应在大气中形成的颗粒。其中包括称为硫酸盐和硝酸盐的化学物质，它们是由二氧化硫的排放和氮的排放形成的，该途径是通过相当理解的途径。另外，在空气中颗粒中有一类化学物质，称为二级有机化合物。这些是通过由人造源（例如汽油蒸气）和天然来源引起的有机蒸气大气中的化学加工形成的，尤其是由树木释放的化合物。这些次级有机化合物的化学成分非常多样化，并且对空气中颗粒质量的贡献尚不清楚。该项目涉及测量英国大气中的二级有机化合物，以估计它们对空气寄生颗粒总量的贡献。此外，该项目将测量此类颗粒的化学成分，并使用它来了解它们由哪些有机蒸气形成。通过这样的研究，可以通过减少人为来源来控制次级有机化合物质量的哪些部分，而哪一部分是由植被释放的天然化合物产生的，而自然化合物不容易控制。

项目成果

期刊论文数量（6）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Seasonal cycles in short-lived hydrocarbons in baseline air masses arriving at Mace Head, Ireland

DOI：
10.1016/j.atmosenv.2012.08.023
发表时间：
2012-12
期刊：
Atmospheric Environment
影响因子：
5
作者：
R. Derwent;P. Simmonds;S. O'Doherty;A. Grant;D. Young;M. Cooke;A. Manning;S. Utembe;M. Jenkin;D. Shallcross
通讯作者：
R. Derwent;P. Simmonds;S. O'Doherty;A. Grant;D. Young;M. Cooke;A. Manning;S. Utembe;M. Jenkin;D. Shallcross

Simulating secondary organic aerosol in a 3-D Lagrangian chemistry transport model using the reduced Common Representative Intermediates mechanism (CRI v2-R5)

使用简化的通用代表中间体机制 (CRI v2-R5) 在 3-D 拉格朗日化学传输模型中模拟二次有机气溶胶