The Nature and Evolution of Brown Carbon Optical Properties in Atmospheric Aerosols
The Nature and Evolution of Brown Carbon Optical Properties in Atmospheric Aerosols
批准号:
1241621
负责人:
Geoffrey Smith
金额:
$31.56万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2013
资助国家:
美国
项目状态:
已结题
起止时间:
2013-07-01 至 2017-06-30
中文摘要
通过这个项目,将开发一种新的光声光谱(PAS)仪器来测量整个光谱的紫外-可见光范围内的气溶胶吸收。此外,还将研究电荷转移络合物在环境气溶胶吸收UV-可见光中的作用,以及这一因素可能在被臭氧和羟基氧化时发生变化的假设。这项研究将提供对环境气溶胶中棕色碳的性质的洞察,并研究它如何通过氧化和老化演化。该项目还将改进确定气溶胶光学性质以及了解碳质气溶胶对气候变化和空气质量的影响的最新水平。
英文摘要
Through this project, a novel photoacoustic spectroscopy (PAS) instrument will be developed to measure aerosol absorption throughout the UV-visible range of the spectrum. In addition, the role of charge-transfer complexes in the absorption of UV-visible light by ambient aerosols will be investigated, as will the hypothesis that this factor may be subject to change upon oxidation by O3 and OH radicals.This research will provide insight into the nature of brown carbon in ambient aerosol and investigate how it may evolve through oxidation and aging. The project will also improve the state-of-the-art for determining aerosol optical properties, and for understanding the impact of carbonaceous aerosols on climate change and air quality.
期刊论文(2)
专著(0)
科研奖励(0)
会议论文
DOI:
10.1080/02786826.2017.1334109
发表时间:
2017-01-01
期刊:
AEROSOL SCIENCE AND TECHNOLOGY
影响因子:
5.2
作者:
[Phillips, Sabrina M., Smith, Geoffrey D.]
通讯作者:
Smith, Geoffrey D.
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