Oxidative aging and cloud condensation nuclei activation of laboratory combustion soot
نویسندگان
چکیده
منابع مشابه
Organic acids as cloud condensation nuclei: Laboratory studies of highly soluble and insoluble species
The ability of sub-micron-sized organic acid particles to act as cloud condensation nuclei (CCN) has been examined at room temperature using a newly constructed continuous-flow, thermal-gradient diffusion chamber (TGDC). The organic acids studied were: oxalic, malonic, glutaric, oleic and stearic. The CCN properties of the highly soluble acids – oxalic, malonic and glutaric – match very closely...
متن کاملOrganic acids as cloud condensation nuclei
Organic acids as cloud condensation nuclei: Laboratory studies of highly soluble and insoluble species P. Pradeep Kumar , K. Broekhuizen, and J. P. D. Abbatt Department of Chemistry, University of Toronto, Toronto, Ontario, M5S 3H6, Canada Permanent address: Department of Physics, University of Pune, Pune 411007, India Received: 20 December 2002 – Accepted: 4 February 2003 – Published: 20 Febru...
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Aerosol hygroscopicity and cloud condensation nuclei (CCN) activity under background conditions and during pollution events are investigated during the AerosolCCN-Cloud Closure Experiment (ACExp) campaign conducted at Xianghe, China in summer 2013. A gradual increase in size-resolved activation ratio (AR) with particle diameter (Dp) suggests that aerosol particles have different hygroscopicitie...
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Humic like substances (HULIS) have been identified as a major fraction of the organic component of atmospheric aerosols. These large multifunctional compounds of both primary and secondary sources are surface active and water soluble. Hence, it is expected that they could affect activation of organic aerosols into cloud droplets. We have compared the activation of aerosols containing atmospheri...
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Soot concentration distribution is investigated both numerically and experimentally in methane-air diffusion flame. The experimental work is conducted with a cylindrical swirl stabilized combustor. Filter paper technique is used to measure soot volume fraction inside the combustor. The numerical simulation is based on the solution of the fully-coupled conservation equations for swirling turbule...
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ژورنال
عنوان ژورنال: Journal of Aerosol Science
سال: 2015
ISSN: 0021-8502
DOI: 10.1016/j.jaerosci.2014.10.001