| Individual particle analysis of aerosols collected at Lhasa City in the Tibetan Plateau |
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| 作者姓名： | Bu Duo Yunchen Zhang Lingdong Kong Hongbo Fu Yunjie Hu Jianmin Chen Lin Li A. Qiong |
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| 作者单位： | Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China;Department of Chemistry & Environmental Science, Tibet University, Lhasa 850000, China,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China,Environmental Monitoring Center Station of Tibet Autonomous Region, Lhasa 850000, China,Environmental Monitoring Center Station of Tibet Autonomous Region, Lhasa 850000, China |
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| 基金项目： | Financial support was provided by the National Natural Science Foundation of China (Nos. 21177026, 21190053, 40975074), the Ministry of Education of new century talent project (NCET- 11-0104), the Doctoral Fund of Ministry of Education (No. 2013007111008) and the Pujiang Talent Program of Shanghai (No. PJ[2010]00317). |
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| 摘 要： | To understand the composition and major sources of aerosol particles in Lhasa City on the Tibetan Plateau (TP), individual particles were collected from 2 February to 8 March, 2013 in Tibet University. The mean concentrations of both PM2.5 and PM10 during the sampling were 25.7 ± 21.7 and 57.2 ± 46.7 μg/m3, respectively, much lower than those of other cities in East and South Asia, but higher than those in the remote region in TP like Nam Co, indicating minor urban pollution. Combining the observations with the meteorological parameters and back trajectory analysis, it was concluded that local sources controlled the pollution during the sampling. Transmission electron microscopy (TEM) combined with energydispersive X-ray spectra (EDS) was used to study 408 particles sampled on four days. Based on the EDS analysis, a total of 8 different particle categories were classified for all 408 particles, including Si-rich, Ca-rich, soot, K-rich, Fe-rich, Pb-rich, Al-rich and other particles. The dominant elements were Si, Al and Ca, which were mainly attributed to mineral dust in the earth's crust such as feldspar and clay. Fe-, Pb-, K-, Al-rich particles and soot mainly originated from anthropogenic sources like firework combustion and biomass burning during the sampling. During the sampling, the pollution mainly came from mineral dust, while the celebration ceremony and religious ritual produced a large quantity of anthropogenic metal-bearing particles on 9 and 25 February 2013. Cement particles also had a minor influence. The data obtained in this study can be useful for developing pollution control strategies.
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| 关 键 词： | Individual particles Fireworks Biomass burning Lhasa TEM |
| 收稿时间： | 5/9/2014 12:00:00 AM |
| 修稿时间： | 2014/7/18 0:00:00 |
Individual particle analysis of aerosols collected at Lhasa City in the Tibetan Plateau |
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| Bu Duo,Yunchen Zhang,Lingdong Kong,Hongbo Fu,Yunjie Hu,Jianmin Chen,Lin Li,A. Qiong.Individual particle analysis of aerosols collected at Lhasa City in the Tibetan Plateau[J].Journal of Environmental Sciences |
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| Authors: | Bu Duo Yunchen Zhang Lingdong Kong Hongbo Fu Yunjie Hu Jianmin Chen Lin Li and A Qiong |
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| Institution: | Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China;Department of Chemistry & Environmental Science, Tibet University, Lhasa 850000, China,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China,Environmental Monitoring Center Station of Tibet Autonomous Region, Lhasa 850000, China and Environmental Monitoring Center Station of Tibet Autonomous Region, Lhasa 850000, China |
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| Abstract: | |
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| Keywords: | Individual particles Fireworks Biomass burning Lhasa TEM |
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