气候变化领域集成服务门户(CCPortal): The impact of molecular self-organisation on the atmospheric fate of a cooking aerosol proxy

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DOI	10.5194/acp-22-4895-2022
	The impact of molecular self-organisation on the atmospheric fate of a cooking aerosol proxy
	Milsom, Adam; Squires, Adam M.; Ward, Andrew D.; Pfrang, Christian
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	4895
结束页码	4907
卷号	22 期号:7 页码:13
英文摘要	Atmospheric aerosols influence the climate via cloud droplet nucleation and can facilitate the long-range transport of harmful pollutants. The lifetime of such aerosols can therefore determine their environmental impact. Fatty acids are found in organic aerosol emissions with oleic acid, an unsaturated fatty acid, being a large contributor to cooking emissions. As a surfactant, oleic acid can self-organise into nanostructured lamellar bilayers with its sodium salt, and this self-organisation can influence reaction kinetics. We developed a kinetic multi-layer model-based description of decay data we obtained from laboratory experiments of the ozonolysis of coated films of this self-organised system, demonstrating a decreased diffusivity for both oleic acid and ozone due to lamellar bilayer formation. Diffusivity was further inhibited by a viscous oligomer product forming in the surface layers of the film. Our results indicate that nanostructure formation can increase the reactive half-life of oleic acid by an order of days at typical indoor and outdoor atmospheric ozone concentrations. We are now able to place nanostructure formation in an atmospherically meaningful and quantifiable context. These results have implications for the transport of harmful pollutants and the climate.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000783163500001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273120
作者单位	University of Birmingham; University of Bath; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); STFC Rutherford Appleton Laboratory; University of Reading
推荐引用方式 GB/T 7714	Milsom, Adam,Squires, Adam M.,Ward, Andrew D.,et al. The impact of molecular self-organisation on the atmospheric fate of a cooking aerosol proxy[J],2022,22(7):13.
APA	Milsom, Adam,Squires, Adam M.,Ward, Andrew D.,&Pfrang, Christian.(2022).The impact of molecular self-organisation on the atmospheric fate of a cooking aerosol proxy.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(7),13.
MLA	Milsom, Adam,et al."The impact of molecular self-organisation on the atmospheric fate of a cooking aerosol proxy".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.7(2022):13.