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研究报告目录 |
Analysis of polycyclic aromatic hydrocarbons in tree-rings of Masson pine(Pinus massoniana L.) from two industrial sites in the Pearl River Delta, south China |
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| 出 版 社：Journal of Environmental Monitoring |
| 发表时间：2011 |
| 台 站：
鼎湖山森林生态系统定位研究站
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| 作 者：旷远文，周国逸等 |
| 点 击 率：4746 |
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| 摘 要(英文)：Concentrations of polycyclic aromatic hydrocarbons (PAHs) were examined and potential sources of PAHs were identified from the dated tree-rings of Masson pine (Pinus massoniana L.) near two
industrial sites (Danshuikeng, DSK and Xiqiaoshan, XQS) in the Pearl River Delta of south China.Total concentrations of PAHs (PPAHs) were revealed with similar patterns of temporal trends in the tree-rings at both sites, suggesting tree-rings recorded the historical variation in atmospheric PAHs.The differences of individual PAHs and of PPAHs detected in the tree-rings between the two sites reflected the historical differences of airborne PAHs. Regional changes in industrial activities might contribute to the site-specific and period-specific patterns of the tree-ring PAHs. The diagnostic PAH
ratios of Ant/(Ant + PA), FL/(FL + Pyr), and BaA/(BaA + Chr)) revealed that PAHs in the tree-rings at both sites mainly stemmed from the combustion process (pyrogenic sources). Principal component
analysis further confirmed that wood burning, coal combustion, diesel, and gasoline-powered vehicular emissions were the dominant contributors of PAHs sources at DSK, while diesel combustion,gasoline
and natural gas combustion, and incomplete coal combustion were responsible for the main origins of PAHs at XQS. Tree-ring analysis of PAHs was indicative of PAHs from a mixture of sources of combustion, thus minimizing the bias of short-term active air sampling. |
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 旷远文-2011-Journal of Environmental Monitoring-Analysis of polycyclic aromatic hydrocarbons in tree-rings of Masson pine (Pinus massoniana L.) from two industrial sites in the Pearl River Delta, south China.pdf |
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