Refueling emission of volatile organic compounds from China 6 gasoline vehicles

Sun, Luna; Zhong, Chongzhi; Peng, Jianfei; Wang, Ting; Wu, Lin; Liu, Yan; Sun, Shiding; Li, Yuening; Chen, Qiang; Song, Pengfei; Mao, Hongjun

doi:10.1016/j.scitotenv.2021.147883

Cited by 18 publications

(6 citation statements)

References 34 publications

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“…The identification of VOC sources relies on specific tracer species (Figure 6). Large contributions of propane, n-pentane and iso-pentane indicate gasoline evaporation, with this source exhibiting pronounced diurnal variations characterized by higher concentrations during the day and lower concentrations at night [39]. Low-carbon alkenes, such as propylene and 1-butene, are primarily associated with gasoline vehicle exhaust [40].…”

Section: Source Analysis Of Vocsmentioning

confidence: 99%

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Characteristics and Formation Mechanism of Ozone Pollution in Demonstration Zone of the Yangtze River Delta, China

Wu,

Gu,

Shi

et al. 2024

Atmosphere

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Emerging research indicates that ground-level ozone (O3) has become a leading contributor to air quality concerns in many Chinese cities, with the Yangtze River Delta (YRD) region facing particular challenges. This study investigated the characterization of air pollutants in Wujiang, which is located within the YRD demonstration zone, during the warm season (April–September) of 2022. The contributions of emission and meteorology to O3 were identified, the O3-NOX-VOC sensitivities were discussed, and the VOC sources and their contributions to O3 formation were analyzed. A random forest model revealed that the high O3 concentration was mainly caused by a combination of increased emission intensity due to the resumption of work and production after the COVID-19 pandemic, along with adverse meteorological conditions. The results revealed more than 92% of the pollution days were related to O3 during the warm season, and the impact of O3 precursor emissions was slightly greater than that of the meteorological conditions. O3 formation was in the VOC-limited regime, and emission reduction strategies targeting VOCs, particularly aromatics such as toluene and xylene, have been identified as the most effective approach for mitigating O3 pollution. Changes in O3-NOX-VOC sensitivity were also observed from the VOC-limited regime to the transitional regime, which was primarily driven by variations in the NOX concentrations. The VOC source analysis results showed that the contributions of gasoline vehicle exhaust and diesel engine exhaust (mobile source emissions) were significantly greater than those of the other sources, accounting for 20.8% and 16.5% of the total VOC emissions, respectively. This study highlights the crucial role of mobile source emission control in mitigating O3 pollution. Furthermore, prioritizing the control of VOC emission sources with minimal NOX contributions is highly recommended within the VOC-limited regime.

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Section: Source Analysis Of Vocsmentioning

confidence: 99%

“…tions during the day and lower concentrations at night [39]. Low-carbon alkenes, such as propylene and 1-butene, are primarily associated with gasoline vehicle exhaust [40].…”

Section: Source Analysis Of Vocsmentioning

confidence: 99%

Characteristics and Formation Mechanism of Ozone Pollution in Demonstration Zone of the Yangtze River Delta, China

Wu,

Gu,

Shi

et al. 2024

Atmosphere

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“…At last, although it is indirectly linked with vehicle emissions, asphalt is also known to be a contributor to SOA formation through emissions of SVOCs and IVOCs [ 178 ]. Refuelling operations are also known to be an important source of VOCs/IVOCs leading to SOA formation, has and have been addressed in studies on Chinese cities [ 179 ]. These two issues are not within the scope of this review.…”

Section: Scientific Backgroundmentioning

confidence: 99%

Emissions of Carbonaceous Particulate Matter and Ultrafine Particles from Vehicles—A Scientific Review in a Cross-Cutting Context of Air Pollution and Climate Change

Bessagnet

Allemand²,

Putaud

et al. 2022

Applied Sciences

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Airborne particulate matter (PM) is a pollutant of concern not only because of its adverse effects on human health but also on visibility and the radiative budget of the atmosphere. PM can be considered as a sum of solid/liquid species covering a wide range of particle sizes with diverse chemical composition. Organic aerosols may be emitted (primary organic aerosols, POA), or formed in the atmosphere following reaction of volatile organic compounds (secondary organic aerosols, SOA), but some of these compounds may partition between the gas and aerosol phases depending upon ambient conditions. This review focuses on carbonaceous PM and gaseous precursors emitted by road traffic, including ultrafine particles (UFP) and polycyclic aromatic hydrocarbons (PAHs) that are clearly linked to the evolution and formation of carbonaceous species. Clearly, the solid fraction of PM has been reduced during the last two decades, with the implementation of after-treatment systems abating approximately 99% of primary solid particle mass concentrations. However, the role of brown carbon and its radiative effect on climate and the generation of ultrafine particles by nucleation of organic vapour during the dilution of the exhaust remain unclear phenomena and will need further investigation. The increasing role of gasoline vehicles on carbonaceous particle emissions and formation is also highlighted, particularly through the chemical and thermodynamic evolution of organic gases and their propensity to produce particles. The remaining carbon-containing particles from brakes, tyres and road wear will still be a problem even in a future of full electrification of the vehicle fleet. Some key conclusions and recommendations are also proposed to support the decision makers in view of the next regulations on vehicle emissions worldwide.

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“…The VOCs emissions from motor vehicles include exhaust and evaporative emissions, which refer to non-exhaust emissions generated during the soak, diurnal, refueling, and driving processes. It can be divided into four types: hot soak loss, diurnal breath loss, refueling emissions, and running loss (RL) emission [1,2] . The first three have gradually been added to China's light-duty vehicle emission standard to control the VOCs emission.…”

Section: Introductionmentioning

confidence: 99%

Running loss emission characteristics and monthly evolution pattern for light-duty vehicle

Zhong,

Sun,

2023

Second International Conference on Energy, Power, and Electrical Technology (ICEPET 2023)

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The running loss SHED was selected to study the impact of temperature on the running loss emission for light-duty vehicles, and the monthly evolution of vehicle running loss emissions was analyzed in consideration with calculation model, meteorological temperature, and travel patterns. The test results show that the running loss emissions of the vehicle gradually increased with the increase of temperature. In the CLTC cycle conditions, the emission in the low speed phase account for the highest emissions, and is mostly affected by temperature with the highest emission increment due to the accumulation of volatile or permeable fuel vapor before the running loss test caused by long-time hot soak and the fuel tank heating. Based on the meteorological temperature of Tianjin from January to December, the average annual mileage of motor vehicles, the monthly variation coefficient, and the number of motor vehicle, the annual running loss emission is estimated to be approximately 159.54 tons. The monthly running loss emission in January and February are relatively low, then gradually increase and reach the peak at June, stabilize from June to August, and gradually decrease from September to December.

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Refueling emission of volatile organic compounds from China 6 gasoline vehicles

Cited by 18 publications

References 34 publications

Characteristics and Formation Mechanism of Ozone Pollution in Demonstration Zone of the Yangtze River Delta, China

Characteristics and Formation Mechanism of Ozone Pollution in Demonstration Zone of the Yangtze River Delta, China

Emissions of Carbonaceous Particulate Matter and Ultrafine Particles from Vehicles—A Scientific Review in a Cross-Cutting Context of Air Pollution and Climate Change

Running loss emission characteristics and monthly evolution pattern for light-duty vehicle

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