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Real-time measurements of PM2.5, PM10–2.5, and BC in an urban streetcanyon
Cheng,Y(Cheng,Yan)[1,2]; Lee,SC(Lee,Shuncheng)[3]; Gao,Y(Gao,Yuan)[3]; Cui,L(Cui,Long)[3]; Deng,WJ(Deng,Wenjing)[4]; Cao,JJ(Cao,Junji)[2]; Shen,ZX(Shen,Zhenxing)[1]; Sun,J(Sun,Jian)[3]
2015-06
发表期刊Particuology
卷号20期号:2015页码:134-140
文章类型期刊论文
摘要

A continuous dichotomous beta gauge monitor was used to characterize the hourly content of PM2.5, PM10–2.5, and Black Carbon (BC) over a 12-month period in an urban street canyon of Hong Kong. Hourly vehicle counts for nine vehicle classes and meteorological data were also recorded. The average weekly cycles of PM2.5, PM10–2.5, and BC suggested that all species are related to traffic, with high concentrations on workdays and low concentrations over the weekends. PM2.5 exhibited two comparable concentrations at 10:00–11:00 (63.4 μg/m3) and 17:00–18:00 (65.0 μg/m3) local time (LT) during workdays, corresponding to the hours when the numbers of diesel-fueled and gasoline-fueled vehicles were at their maximum levels: 3179 and 2907 h−1, respectively. BC is emitted mainly by diesel-fueled vehicles and this showed the highest concentration (31.2 μg/m3) during the midday period (10:00–11:00 LT) on workdays. A poor correlation was found between PM2.5 concentration and wind speed (R = 0.51, P-value > 0.001). In contrast, the concentration of PM10–2.5 was found to depend upon wind speed and it increased with obvious statistical significance as wind speed increased (R = 0.98, P-value < 0.0001).

关键词Pm2.5 Pm10–2.5 Bc Hong Kong Urban Street Canyon
DOI10.1016/j.partic.2014.08.006
收录类别SCI
语种英语
引用统计
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/361006/9513
专题粉尘与环境研究室
作者单位1.Department of Environmental Science and Technology, School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
2.SKLLQG, Institute of Earth and Environment, CAS, Xi’an 710075, China;
3.Department of Civil and Environmental Engineering, Research Center for Environmental Technology and Management, The Hong Kong PolytechnicUniversity, Hong Kong, China;
4.Department of Science and Environmental Studies and Centre for Education for Environmental Sustainability, The Hong Kong Institute of Education, HongKong, China
推荐引用方式
GB/T 7714
Cheng,Y(Cheng,Yan)[1,2],Lee,SC(Lee,Shuncheng)[3],Gao,Y(Gao,Yuan)[3],等. Real-time measurements of PM2.5, PM10–2.5, and BC in an urban streetcanyon[J]. Particuology,2015,20(2015):134-140.
APA Cheng,Y.,Lee,SC.,Gao,Y.,Cui,L.,Deng,WJ.,...&Sun,J.(2015).Real-time measurements of PM2.5, PM10–2.5, and BC in an urban streetcanyon.Particuology,20(2015),134-140.
MLA Cheng,Y,et al."Real-time measurements of PM2.5, PM10–2.5, and BC in an urban streetcanyon".Particuology 20.2015(2015):134-140.
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