Comparison of fine particles emissions of light-duty gasoline vehicles from chassis dynamometer tests and on-road measurements

Li, Tiezhu; Chen, Xudong; Yan, Zhenxing

doi:10.1016/j.atmosenv.2012.11.031

Cited by 62 publications

(34 citation statements)

References 20 publications

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“…Although the volatility characteristics of the smallest particles have not been inspected in all the previous studies, some studies (e.g. Mathis et al, 2005;Li et al, 2013) indicate that the GDI exhaust can contain semivolatile nucleation particles too. In contrast to small amorphous carbon particles (Sgro et al, 2012), and in general, nonvolatile core particles formed during diesel combustion (e.g.…”

Section: Introductionmentioning

confidence: 97%

Exhaust particles of modern gasoline vehicles: A laboratory and an on-road study

Karjalainen

Pirjola

Heikkilä

et al. 2014

Atmospheric Environment

161

114

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Section: Introductionmentioning

confidence: 97%

Exhaust particles of modern gasoline vehicles: A laboratory and an on-road study

Karjalainen

Pirjola

Heikkilä

et al. 2014

Atmospheric Environment

161

114

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“…There are several methods for the calculation of vehicle exhaust emission factors [6]. Chassis dynamometer tests can be used for the measurement of emission factors under controlled conditions [7][8][9]. The portable emission measurement system (PEMS) is a well-known method which measures the exhaust emissions under real-world conditions [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

The Relative Contributions of Mobile Sources to Air Pollutant Emissions in Tehran, Iran: an Emission Inventory Approach

Shahbazi

Reyhanian

Hosseini

et al. 2016

Emiss. Control Sci. Technol.

114

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Tehran, a city with 8.5 million inhabitants, has suffered from rapid and unplanned urbanization in recent years resulting in substantial environmental impacts perhaps foremost of which is poor air quality. A major source of air pollution is emissions from mobile vehicles; therefore, having an accurate and comprehensive mobile source emission inventory is essential for decision-makers to develop mitigating strategies. The aim of this study is to determine the relative contributions of specific mobile sources to key air pollutants through the development of an emissions inventory for mobile sources in the city of Tehran using the International Vehicle Emissions (IVE) model. Tehran traffic data were acquired to obtain link level emission rates, using IVE emission rates. The developed emission inventory was evaluated using Tehran gasoline sales data. The results indicate that the sources of carbon monoxide (CO), volatile organic compound (VOC), nitrogen oxide (NO x ), and sulfur oxide (SO x ) emissions are mainly passenger cars. The contribution of emissions of CO, VOCs, and particulate matter (PM) from motorcycles to the total traffic emissions is more than 15, 31, and 12 %, respectively. Despite the fact that medium and heavy-duty vehicles (minibuses, buses, and trucks) only comprise 2.4 % of the Tehran fleet, they contribute more than 41, 64, and 85 % of the NO x , SO x , and PM emissions, respectively. Analyzing the distribution of the aggregated emission of pollutants shows that emissions are mostly higher in central zones due to the high traffic rate of passenger cars, taxis, motorcycles, and buses.

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“…As traffic emissions were considered widely as a main component of particles in an urban atmosphere, [27] divided traffic-related emissions into those from vehicle exhaust, which included studies of vehicle operating modes [28,29] and fuel types [30,31,32,33], and those from vehicle non-exhaust sources, such as from brake wear [34,35], tire-road surface interaction [34], and resuspension [20,34]. Industrial combustion emissions also contribute greatly to the ultrafine and fine particle fractions [27].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Fine Particles in an Urban Atmosphere—Relationships with Meteorological Parameters and Trace Gases

Zhang

Zhu

Gong

et al. 2016

IJERPH

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Atmospheric fine particles (diameter < 1 μm) attract a growing global health concern and have increased in urban areas that have a strong link to nucleation, traffic emissions, and industrial emissions. To reveal the characteristics of fine particles in an industrial city of a developing country, two-year measurements of particle number size distribution (15.1 nm–661 nm), meteorological parameters, and trace gases were made in the city of Wuhan located in central China from June 2012 to May 2014. The annual average particle number concentrations in the nucleation mode (15.1 nm–30 nm), Aitken mode (30 nm–100 nm), and accumulation mode (100 nm–661 nm) reached 4923 cm−3, 12193 cm−3 and 4801 cm−3, respectively. Based on Pearson coefficients between particle number concentrations and meteorological parameters, precipitation and temperature both had significantly negative relationships with particle number concentrations, whereas atmospheric pressure was positively correlated with the particle number concentrations. The diurnal variation of number concentration in nucleation mode particles correlated closely with photochemical processes in all four seasons. At the same time, distinct growth of particles from nucleation mode to Aitken mode was only found in spring, summer, and autumn. The two peaks of Aitken mode and accumulation mode particles in morning and evening corresponded obviously to traffic exhaust emissions peaks. A phenomenon of “repeated, short-lived” nucleation events have been created to explain the durability of high particle concentrations, which was instigated by exogenous pollutants, during winter in a case analysis of Wuhan. Measurements of hourly trace gases and segmental meteorological factors were applied as proxies for complex chemical reactions and dense industrial activities. The results of this study offer reasonable estimations of particle impacts and provide references for emissions control strategies in industrial cities of developing countries.

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Comparison of fine particles emissions of light-duty gasoline vehicles from chassis dynamometer tests and on-road measurements

Cited by 62 publications

References 20 publications

Exhaust particles of modern gasoline vehicles: A laboratory and an on-road study

Exhaust particles of modern gasoline vehicles: A laboratory and an on-road study

The Relative Contributions of Mobile Sources to Air Pollutant Emissions in Tehran, Iran: an Emission Inventory Approach

Characteristics of Fine Particles in an Urban Atmosphere—Relationships with Meteorological Parameters and Trace Gases

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