Impact of PM2.5 chemical compositions on aerosol light scattering in Guangzhou - the largest megacity in South China
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摘要Daily PM2.5 samples were collected in Guangzhou - the largest megacity in South China, for a period of one month in each season during 2009-2010. Mass concentrations of water-soluble inorganic ions, organic carbon (OC) and elemental carbon (EC) in PM2.5 were determined, and aerosol scattering coefficient (b(sp)) was synchronously measured. The daily PM2.5 mass concentrations ranged from 21.0 to 213.6 mu g m(-3) with an annual average of 76.8 +/- 41.5 mu g m(-3). The highest seasonal average PM2.5 was observed in winter (103.3 +/- 50.1 mu g m(-3)) and the lowest in summer (38.6 +/- 15.7 mu g m(-3)). Annual average PM2.5 mass scattering efficiency (MSE) was 3.5 +/- 0.9 m(2) g(-1), with obvious seasonal variations in sequence of autumn (4.5 +/- 0.2 m(2) g(-1)) > winter (3.9 +/- 0.5 m(2) g(-1)) > spring (3.0 +/- 0.4 m(2) g(-1)) > summer (2.3 +/- 0.3 m(2) g(-1)).
著者Tao J, Zhang LM, Ho KF, Zhang RJ, Lin ZJ, Zhang ZS, Lin M, Cao JJ, Liu SX, Wang GH
期刊名稱Atmospheric Research
出版年份2014
月份1
日期1
卷號135
出版社ELSEVIER SCIENCE INC
頁次48 - 58
國際標準期刊號0169-8095
電子國際標準期刊號1873-2895
語言英式英語
關鍵詞Aerosol chemical composition; Aerosol scattering coefficient; PM2.5; Urban aerosols
Web of Science 學科類別Meteorology & Atmospheric Sciences; METEOROLOGY & ATMOSPHERIC SCIENCES

上次更新時間 2021-18-01 於 23:54