Research Article of American Journal of Engineering Research and Reviews
Urban Viaducts Influence on the Vertical Concentrations of Particulate Matters
Jing Xiao, Hong-di He, Rong Gao
Logistics Research Center, Shanghai Maritime University, Shanghai 201306, China
Due to the increase of private vehicles in China cities, high-level pollution is often detected in urban street canyons. The study selected Jinlu building as the research object and used FLUCK985 particle counter to collect the particles concentration at different heights, at the same time, combined with meteorological to study the vertical variation characteristics. Finally, combined with the feature of human body, the exposure assessment method was used to analyze the effects of particulate matter on human health. The results are as follows. (1) As the diameter increased, particles number decreased. The CV (Coefficient variation) alongside viaduct was smaller than non-viaduct and the CV degree is weak or moderate. (2) The contamination degree in viaduct is greater than non-viaduct. The particulate concentration decreased with the increase of floor, but near viaduct, the coarse and fine particles showed different trends. (3) The early peaks concentration was more than evening peaks in sunny, windy and rainy days, among them, the sunny concentration was more than rainy days; the windy days concentration was changed during the different diameter. (4) the viaduct RDD was more than non-viaduct. The RDD was highest in Older; the second was Adult and Child RDD was the lowest. The RDD in early peak was higher than evening peak of which PM10 always stay on the nasal cavity. Thus the people should try to shorten linger under viaducts so as to prevent the coarse particles from causing discomfort to nasal cavity.
Keywords: urban viaducts; particle concentration; vertical distribution; pedestrian exposure level
How to cite this article:
Jing Xiao, Hong-di He, Rong Gao.Urban Viaducts Influence on the Vertical Concentrations of Particulate Matters. American Journal of Engineering Research and Reviews, 2019, 2:16. DOI: 10.28933/ajoerr-2019-04-1805
1. Zhang Yuihui, Huang Wei, London S J, et al. Ozone and Daily Mortality in Shanghai, China[J]. Environmental Health Perspectives, 2006, 114(8):1227-1232.
2. Chen Bing, Hong Chuanjie, Kan Haidong. Exposures and health outcomes from outdoor air pollutants in China. [J]. Toxicology, 2004, 198(1):291-300.
3. NYBERG F, GUSTAVSSON P, JARUP L, et al. Urban air pollution and lung cancer in Stockholm [J]. Epidemiology, 2000, 11(5): 487–495.
4. Yang Liu, Wu Ye, Song Shaojie, et al. Particle Number Size Distribution near a Major Road with Different Traffic Conditions[J] Environmental Science, 2012, 33(3):694-700.
5. Johnson WB, Ludwig FL, Dabberdt WF, et al. An urban diffusion simulation model for carbon monoxide[J]. Journal of Air Pollution Control Association, 1973, 23:490-498
6. He Chunyu, Wang Qidong. Vehicle Emission Factors Determination Using CMEM in Beijing[J]. Research of Environmental Sciences, 2006(1):109-112.
7. Murena F , Favale G , Vardoulakis S , et al. Modelling dispersion of traffic pollution in a deep street canyon: Application of CFD and operational models[J]. Atmospheric Environment, 2009, 43(14):2303-2311.
8. Zauli Sajani S , Marchesi S , Trentini A , et al. Vertical variation of PM2.5, mass and chemical composition, particle size distribution, NO2, and BTEX at a high rise building[J]. Environmental Pollution, 2018, 235:339-349.
9. ZHANG Chuanfu, Zeng Jianrong, Wen Mou, et al. Influence of viaduct on the transport of atmospheric particulate matter in street canyons [J] .Environmental science research, 2012,25(02):159-164.
10. GAO Ya, WANG Zhanyong, LU Qingchang, et al. Estimation of Vertical Concentrations of Fine Particulates Alongside an Elevated Expressway [J].Journal of Shanghai Jiaotong University, 2018, 52(6): ):650-657.
11. Tittarelli A , Borgini A , Bertoldi M , et al.Estimation of particle mass concentration in ambient air using a particle counter[J]. Atmospheric Environment, 2008, 42(36):8543-8548.
12. Viana M , Querol X , Alastuey A , et al. Characterising exposure to PM aerosols for an epidemiological study[J]. Atmospheric Environment, 2008, 42(7):1552-1568.
13. Kumar P , Goel A . Concentration dynamics of coarse and fine particulate matter at and around signalised traffic intersections[J]. Environ. Sci.: Processes Impacts, 2016,18(9):1220-1235.
14. Sánchezsoberón F, Mari M, Kumar V, et al. An approach to assess the Particulate Matter exposure for the population living around a cement plant: modelling indoor air and particle deposition in the respiratory tract.[J]. Environmental Research, 2015, 143:10-18.
15. Zhao Wenhui, Gong Huili, Zhao Wenji,et al. Spatial and temporal variation of Beijing inhalable particulate matter and its meteorological factors based on geostatistical analysis[J]. Acta Scientiae Circumstantiae, 2010, 30(11):2154-2163.
16. Li Zhiyuan, Zhao Jingde, Wang Yutong, et al. Measurement of Respirable Particulate Matter Diffusion under the Valley in Street Viaduct[J].Building Energy & Environment,2016,35(10):30-32+12.
17. Xu Xiaoqin. The influence of urban viaducts on the diffusion of fine particles in street canyons [D].Chang’an University. 2018.
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