Concentration and chemical characteristics of PM2.5 in Beijing, China: 2001–2002
In: Science of The Total Environment, Jg. 355 (2006-02-15), S. 264-275
Online
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Zugriff:
Weekly PM2.5 samples were simultaneously collected at a semi-residential (Tsinghua University) and a downtown (Chegongzhuang) site in Beijing from August 2001 through September 2002. The ambient mass concentration and chemical composition of PM2.5 were determined. Analyses including elemental composition, water-soluble ions, and organic and elemental carbon were performed. The annual average concentrations of PM2.5 were 96.5 microg m(-3) and 106.9 microg m(-3) at CGZ and HU site, respectively. More than 80% of the PM2.5 mass concentrations were explained by carbonaceous species, secondary particles, crustal matters and trace elements at the two sites. Carbonaceous species were the most abundant components, constituting about 45% and 48% of the total PM2.5 mass concentrations at CGZ and THU site, respectively. SO4(2-), NO3- and NH4+ were three major ions, accounting for 37%, 23% and 20%, respectively, of the total mass of inorganic water-soluble ions.
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Concentration and chemical characteristics of PM2.5 in Beijing, China: 2001–2002
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Autor/in / Beteiligte Person: | Mulawa, Patricia A. ; Ma, Yongliang ; Chan, Tai ; Yu, Xue-Chun ; He, Kebin ; Yang, Fumo ; Duan, Fengkui ; Cadle, Steven H. |
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Zeitschrift: | Science of The Total Environment, Jg. 355 (2006-02-15), S. 264-275 |
Veröffentlichung: | Elsevier BV, 2006 |
Medientyp: | unknown |
ISSN: | 0048-9697 (print) |
DOI: | 10.1016/j.scitotenv.2005.03.001 |
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