Distribution of Polycyclic Aromatic Hydrocarbons in Aerosols and Dustfall in Macao |
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| Authors: | Qi Shihua Yan Jun Zhang Gan Fu Jiamo Sheng Guoying Wang Zhishi S M Tong U W Tang Min Yunshun |
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| Institution: | (1) State Key Laboraotory of Organic Geochemistry, Guangzhou Institute of Geochemistry, CAS, Guangzhou, 510640, P R China;(2) Faculty of Science and Technology, University of Macao, Macao;(3) Macao Meteorological Station, Macao |
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| Abstract: | Polycyclic aromatic hydrocarbons (PAHs), widespread environmental pollutants, have been measured in aerosols and dustfall in Macao. In this paper, we compare concentration distributions and determine the partitioning of PAHs in aerosols and dustfall for different areas, sampling times and sampling heights. The results demonstrate that the concentrations of  PAHs in aerosols and dustfall vary at the different sites and heights. The concentrations of PAHs and most of the individual PAHs in aerosols at night were higher than those in the daytime when using the unit of  g/g and lower than those when using the unit of g m-3. It is shown that the distribution of individual PAHs in aerosols differs significantly from that in dustfall. |
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| Keywords: | aerosol dustfall Macao polycyclic aromatic hydrocarbons (PAHs) |
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