کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4443237 | 1311183 | 2007 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of particle acidity and UV light on secondary organic aerosol formation from oxidation of aromatics in the absence of NOx
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of particle acidity and UV light on secondary organic aerosol formation from oxidation of aromatics in the absence of NOx Effects of particle acidity and UV light on secondary organic aerosol formation from oxidation of aromatics in the absence of NOx](/preview/png/4443237.png)
چکیده انگلیسی
Recent laboratory observations have shown that particle acidity increases secondary organic aerosol (SOA) yields. However, these studies have mainly focused on biogenic precursors such as isoprene and terpenes. In this paper, the effects of particle acidity on the SOA yields from aromatic precursors under both dark and UV-visible light conditions were characterized through controlled chamber experiments. SOA was produced from oxidation of toluene and 1,3,5-trimethylbenzene (135-TMB) with OH radicals created by ozonolysis of 2-methyl-2-butene (MB). Particle acidity, described with proton concentrations, varied with inorganic seed aerosol composition and humidity (20-52%). Overall, in the presence of acidic seeds, greater increases in SOA yields were observed for the toluene system than the 135-TMB system. UV irradiation reduced SOA yields for both toluene and 135-TMB systems to different extents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 41, Issue 35, November 2007, Pages 7603-7613
Journal: Atmospheric Environment - Volume 41, Issue 35, November 2007, Pages 7603-7613
نویسندگان
Gang Cao, Myoseon Jang,