Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31848
Title: Real-time measurements of PM2.5, PM10-2.5, and BC in an urban street canyon
Authors: Cheng, Y
Lee, SC 
Gao, Y
Cui, L
Deng, W
Cao, J
Shen, Z
Sun, J
Keywords: BC
Hong Kong
PM10-2.5
PM2.5
Urban street canyon
Issue Date: 2015
Publisher: Elsevier
Source: Particuology, 2015, v. 20, p. 134-140 How to cite?
Journal: Particuology 
Abstract: 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).
URI: http://hdl.handle.net/10397/31848
ISSN: 1674-2001
EISSN: 2210-4291
DOI: 10.1016/j.partic.2014.08.006
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

7
Last Week
0
Last month
0
Citations as of Aug 19, 2017

WEB OF SCIENCETM
Citations

6
Last Week
0
Last month
1
Citations as of Aug 14, 2017

Page view(s)

35
Last Week
4
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.