Chemical characterization of fine particles from on-road vehicles in the Wutong tunnel in Shenzhen, China.
Chemical characterization of fine particles from on-road vehicles in the Wutong tunnel in Shenzhen, China.
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DOI：
10.1016/j.chemosphere.2005.06.051
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发表时间：
2006-03
期刊：
影响因子：
8.8
通讯作者：
Ling-yan He;Min Hu;Xiaofeng Huang;Yuan-hang Zhang;Ben-De Yu;De-Quan Liu
中科院分区：
文献类型：
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作者：
Ling-yan He;Min Hu;Xiaofeng Huang;Yuan-hang Zhang;Ben-De Yu;De-Quan Liu
自上世纪90年代以来，中国的机动车数量急剧增加。车辆排放的废气，包括各种气体污染物和微粒物质，导致空气质素恶化。然而，对中国道路车辆排放的颗粒物的测量几乎没有报道，因此中国车辆排放的颗粒物的化学成分是未知的。在本研究中，在中国深圳梧桐隧道进行了隧道试验，以测量pm2.5。详细介绍了隧道中pm2.5的化学组成，并通过气相色谱/质谱法测定了其中的有机物。元素碳和有机物分别占梧桐隧道pm2.5总质量的63%和34%。烷烃、多环芳烃、藿烷、脂肪酸和二羧酸是鉴定出的主要有机化合物，并对其在梧桐隧道pm2.5中的来源特征进行了表征。并与文献测量结果进行了比较，说明了梧桐隧道车辆源剖面的特征。本文的实验结果可以提高对中国机动车颗粒物排放的认识。
Vehicle populations in China have been increasing sharply since 1990s. Vehicle emissions including various gaseous pollutants and particulate matter cause deterioration of air quality. However, measurements of particulate mater from on-road vehicles in China are scarcely reported, and thus the chemical compositions of particles emitted from vehicles in China are unknown. In this research, tunnel experiments were performed to measure PM2.5in the Wutong tunnel, Shenzhen, China. Detailed PM2.5chemical compositions, with organic compounds determined by GC/MS, in the tunnel were presented. Elemental carbon and organic matter composed 63% and 34% of the total PM2.5mass in the Wutong tunnel, respectively. Alkanes, PAHs, hopanes, fatty acids, and dicarboxylic acids were the major identified organic compounds, and their source profiles in the PM2.5in the Wutong tunnel were characterized. The comparisons of our measurements with those in the literature were also made to demonstrate the characteristics of the vehicle source profiles in the Wutong tunnel. The experimental results in this paper can improve understanding of particulate matter emitted from vehicles in China.