Traffic emission pollution sampling and analysis on urban streets with high-rising buildings

Zhou, Hongchang; Sperling, Daniel

doi:10.1016/s1361-9209(00)00029-8

Cited by 25 publications

(11 citation statements)

References 3 publications

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“…As a quality check, for all measured pollutants an additional sampler used as a field blank was deployed during each period of exposure. At the end of each period of exposure, samplers and blanks were collected, placed in airtight containers and stored until analysis carried out by ion chromatography for SO 2 , NH 3 , O 3 , NO 2 and NO x and by gascromatography for benzene, toluene and xylenes.…”

Section: Methodsmentioning

confidence: 99%

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Representativeness of Urban Highest Polluted Zones for Sitting Traffic-Oriented Air Monitoring Stations in a Chinese City

Costabile

Desantis

Weimin³

et al. 2006

JSME international journal. Ser. B, Fluids and thermal engineer

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Passive sampling technique was used to preliminary assess the spatial and temporal distribution of air pollution in Suzhou (P.R. China) in 2003, with the aim to determine the representativeness of zones where to monitor air quality. 100 sites were selected to measure 15-days average concentrations of SO 2 , NO x , NO 2 , O 3 , NH 3 , Benzene, Toluene and Xylene in winter and summer. The distribution trend of NO and NO 2 , as well as the ratio of NO 2 /NO x was used to identify the heavy traffic polluted zones and design a network of monitoring stations (macrositing). NO 2 /NO x ratios varied throughout the two selected seasons and from site to site clearly demonstrating the different extent and completeness of NO → NO 2 oxidation processes in time and space. The exceedance frequencies of pollutants was used to design the type of monitoring equipment to be installed at each station (micrositing). An air quality monitoring network composed by 9 monitoring stations has been finally established in 2004 according to the result of this survey and is now currently running.

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Section: Methodsmentioning

confidence: 99%

“…The local pollution problem is apparently becoming severe (2) . China has been long suffered from serious air pollution characterized by high ambient concentrations of SO 2 and particles.…”

Section: Introductionmentioning

confidence: 99%

Representativeness of Urban Highest Polluted Zones for Sitting Traffic-Oriented Air Monitoring Stations in a Chinese City

Costabile

Desantis

Weimin³

et al. 2006

JSME international journal. Ser. B, Fluids and thermal engineer

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“…Because it doesn't consider complex topography, CAL3QHCR doesn't take into consideration the dispersion processes caused by canyons, which form wind tunnels and alter the way pollution is transported in the atmosphere. Studies using CAL3QHC [6,13] also indicate that this model has limitations when used in urban areas, such as is the case of Belo Horizonte, since it doesn't take the existence of canyons or complex topographies into consideration.…”

Section: Concentration Curvesmentioning

confidence: 99%

Study of the dispersion process of vehicular emissions at a specific site in Belo Horizonte using numerical simulation

Jacomino¹,

Tavares²,

Barreto³

et al. 2009

Environmental Health Risk V

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In this study, the California Line Source for Queuing & Hot Spot Calculations Refined (CAL3QHCR) model was used to assess the contribution of particulate matter (PM) from vehicular exhausts to the air quality of a specific site in downtown Belo Horizonte. Meteorological, traffic, signalization, and vehicular emissions data were collected and analyzed according to the CAL3QHCR model's requirements. Due to the absence of PM emission factors for the Belo Horizonte region, it was opted to use previously established factors for vehicles as measured in the São Paulo metropolitan area. Concentration results obtained through simulations were compared to PM 10 and PM 2.5 concentration experimental data, which consisted of samples collected from an air quality monitoring station located in the micro-region selected for this research. For all scenarios considered, concentration values predicted by the model were lower than experimental concentrations. The sensitivity analysis showed that the vehicular emissions factor influenced simulation results more than other input parameters. Thus more research in the area would be indispensable for obtaining specific emission factors for the region without discarding the possibility of establishing a vehicle inspection program through random sampling in Belo Horizonte.

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“…In order to investigate this concern, researchers have conducted lots of studies mainly based upon three different approaches: field monitoring in street canyon [3], wind tunnel simulation [4], and computational fluid-dynamic (CFD) modelling [5]. The problem has also been faced up in China [6,7].…”

Section: Introductionmentioning

confidence: 99%

CFD modelling of traffic-related air pollutants around an urban street-canyon in Suzhou

Costabile¹,

Wang²,

Hong³

et al. 2006

WIT Transactions on Ecology and the Environment, Vol 86

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The wind flow field around urban street-building configurations has an important influence on the microscale pollutant dispersion from road traffic, affecting overall dilution and creating localized spatial variations of pollutant concentration. It is important to understand these small-scale effects not only for assessing personal exposure to pollutants in the vicinity of roads, but also because air quality in a city as a whole is assessed on the basis of data from a few urban monitoring sites. This paper reports some outcomes of a study aimed at exploring the transfer and diffusion characteristics of vehicular exhaust emissions and the constraints associated with significant monitoring locations such as street canyons, courtyards and enclosed spaces, and the conditions propitious to pollutant diffusion and air dispersion in urban areas. The wind field around a street-canyon in the city of Suzhou (China) has been modelled by using the Computational Fluid Dynamic technique. The results have been analysed to better understand the values of gaseous pollutants, meteorological parameters and traffic flows measured by means of automatic analyzers along the same street-canyon at two different heights. It has been found that the model correctly describes the vortex recirculation pattern around the building geometry studied and it is very useful in assessing the micro-scale pollution trends.

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Traffic emission pollution sampling and analysis on urban streets with high-rising buildings

Cited by 25 publications

References 3 publications

Representativeness of Urban Highest Polluted Zones for Sitting Traffic-Oriented Air Monitoring Stations in a Chinese City

Representativeness of Urban Highest Polluted Zones for Sitting Traffic-Oriented Air Monitoring Stations in a Chinese City

Study of the dispersion process of vehicular emissions at a specific site in Belo Horizonte using numerical simulation

CFD modelling of traffic-related air pollutants around an urban street-canyon in Suzhou

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