Characterization of fine particulate black carbon in Guangzhou, a megacity of South China
Chen, XC (Chen, Xiaocui)[ 1 ]; Zhang, ZS (Zhang, Zhisheng)[ 2,3 ]; Engling, G (Engling, Guenter)[ 4 ]; Zhang, RJ (Zhang, Renjian)[ 3 ]; Tao, J (Tao, Jun)[ 2 ]; Lin, M (Lin, Mang)[ 1,5 ]; Sang, XF (Sang, Xuefang)[ 6 ]; Chan, CY (Chan, Chuenyu)[ 1,7 ]; Li, SY (Li, Shiyu)[ 1 ]; Li, YP (Li, Youping)[ 1 ]
2014-07-01
发表期刊ATMOSPHERIC POLLUTION RESEARCH
卷号5期号:3页码:361-370
文章类型期刊论文
摘要

Continuous measurement of fine particulate black carbon (BC) was conducted at an urban site of Guangzhou in South China from December 2007 to December 2008. The daily average BC concentrations ranged from 0.6 to 20.5 mu g m(-3), with an average value of 4.7 mu g m(-3), which was substantially higher than those observed in the urban areas of other developed countries. Diurnal fluctuations of BC were marked with two peaks, one in the morning rush hour (08:00 LT) and the other in the late evening hour (21:00-22:00 LT), while the lowest BC concentrations were observed in the afternoon. Ambient BC concentrations displayed significant seasonal and diurnal variations with higher values in winter and spring, followed by lower concentrations during autumn and summer. Wind speed, wind direction and temperature were important meteorological factors that affected BC concentrations. A clearly negative correlation (r=-0.50, p<0.01) between BC concentrations and wind speed was found during the study period. A specific investigation was conducted to determine the relationship between optical BC and thermal-optical-reflectance elemental carbon (TOR EC) in distinct seasons. Although significant correlations between BC and EC were obtained (r>0.92, p<0.01), the regression slopes (Delta BC/Delta EC) slightly deviated from each other with values of 0.79, 1.18, and 0.81 in winter, spring and summer, respectively, possibly due to the distinct mixing states and source variations in different seasons. The calculated experimental attenuation coefficient showed a higher value (19.3 m(2) g(-1)) in Guangzhou than the one recommended for typical Aethalometer measurements.

关键词Bc Temporal Variations Meteorological Parameters Elemental Carbon
DOI10.5094/APR.2014.042
收录类别SCIE
语种英语
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被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9690
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Engling, G (Engling, Guenter)[ 4 ]
作者单位1.School of Environmental Science and Engineering, Sun Yat–sen University, Guangzhou 510275, China;
2.South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, China;
3.Key Laboratory of Regional Climate–Environment Research for Template East Asia (RCE–TEA), Chinese Academy of Sciences, Beijing 100039, China;
4.Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan;
5.Department of Chemistry and Biochemistry, University of California San Diego, La Jolla 92093, California, USA;
6.IEK–8: Troposphare, Forschungszentrum Julich, Julich 52428, Germany;
7.Key Laboratory of Aerosol, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China
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Chen, XC ,Zhang, ZS ,Engling, G ,et al. Characterization of fine particulate black carbon in Guangzhou, a megacity of South China[J]. ATMOSPHERIC POLLUTION RESEARCH,2014,5(3):361-370.
APA Chen, XC .,Zhang, ZS .,Engling, G .,Zhang, RJ .,Tao, J .,...&Li, YP .(2014).Characterization of fine particulate black carbon in Guangzhou, a megacity of South China.ATMOSPHERIC POLLUTION RESEARCH,5(3),361-370.
MLA Chen, XC ,et al."Characterization of fine particulate black carbon in Guangzhou, a megacity of South China".ATMOSPHERIC POLLUTION RESEARCH 5.3(2014):361-370.
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