Evaluation of emission factors for light-duty gasoline vehicles based on chassis dynamometer and tunnel studies in Shanghai, China

Huang, Cheng; Tao, Shiheng; Lou, Shengrong; Hu, Qingyao; Wang, Hongli; Wang, Qian; Li, Li; Wang, Hongyu; Liu, Jiangang; Quan, Yifeng; Zhou, Lanlan

doi:10.1016/j.atmosenv.2017.09.020

Cited by 45 publications

(20 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, NO x EFs for gasoline and diesel vehicles used in this study, derived from local measurements, were generally higher than those given by MEP (2014). Some real- world measurements based on portable emission measurement systems, on-road chasing, and tunnel experiments also indicated that the NO x emissions from vehicles in China were higher than expected probably due to deficiencies in the type-approval protocols and emission controls (Wu et al, 2012;Huang et al, 2017;Song et al, 2018;Wen et al, 2019). Industrial sources accounted for the majority of total NMVOC emissions (61 %), of which industrial process and solvent-use sources contributed 34 % and 27 %, respec-tively.…”

Section: Source Contributionsmentioning

confidence: 99%

“…To minimize uncertainty in the EI, this study localized the EFs from 80 source categories. This included the majority of anthropogenic emission sources, such as coal-fired power plants and boilers (Yao et al, 2009;Zhao et al, 2010;Wang et al, 2011;Lou, 2014;Sun, 2015;Xu et al, 2018), petroleum refining and ferrous metal manufacturing (Guo et al, 2017), gasoline and diesel vehicles (Huang et al, 2016(Huang et al, , 2017(Huang et al, , 2018b, non-road machinery (Fu et al, 2012Ge et al, 2013;Qu et al, 2015;Li et al, 2016), emissions from cooking (H. L. Gao et al, 2019), livestock and poultry breeding (Chen, 2017;Zhou, 2019), N fertilizer application (Chen et al, 2017;Xia et al, 2018), and biomass burning (Tang et al, 2014). NMVOC EFs for some evaporation loss sources, such as industrial and residential solvent use, and oil storage and transportation, were estimated from the results of field surveys of typical sources in the YRD region.…”

Section: Determination Of Efsmentioning

confidence: 99%

See 1 more Smart Citation

Emission inventory of air pollutants and chemical speciation for specific anthropogenic sources based on local measurements in the Yangtze River Delta region, China

Huang

et al. 2021

Atmos. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

Abstract. A high-resolution air pollutant emission inventory for the Yangtze River Delta (YRD) region was updated for 2017 using emission factors and chemical speciation based mainly on local measurements in this study. The inventory included 424 non-methane volatile organic compounds (NMVOCs) and 43 fine particulate matter (PM2.5) species from 259 specific sources. The total emissions of SO2, NOx, CO, NMVOCs, PM10, PM2.5, and NH3 in the YRD region in 2017 were 1552, 3235, 38 507, 4875, 3770, 1597, and 2467 Gg, respectively. SO2 and CO emissions were mainly from boilers, accounting for 49 % and 73 % of the total. Mobile sources dominated NOx emissions, contributing 57 % of the total. NMVOC emissions, mainly from industrial sources, made up 61 % of the total. Dust sources accounted for 55 % and 28 % of PM10 and PM2.5 emissions, respectively. Agricultural sources accounted for 91 % of NH3 emissions. Major PM2.5 species were OC, Ca, Si, PSO4, and EC, accounting for 9.0 %, 7.0 %, 6.4 %, 4.6 %, and 4.3 % of total PM2.5 emissions, respectively. The main species of NMVOCs were aromatic hydrocarbons, making up 25.3 % of the total. Oxygenated volatile organic compounds (OVOCs) contributed 21.9 % of the total NMVOC emissions. Toluene had the highest comprehensive contribution to ozone (O3) and secondary organic aerosol (SOA) formation potentials, while other NMVOCs included 1,2,4-trimethylbenzene, m,p-xylene, propylene, ethene, o-xylene, and ethylbenzene. Industrial process and solvent-use sources were the main sources of O3 and SOA formation potential, followed by motor vehicles. Among industrial sources, chemical manufacturing, rubber and plastic manufacturing, appliance manufacturing, and textiles made significant contributions. This emission inventory should provide scientific guidance for future control of air pollutants in the YRD region of China.

show abstract

Section: Source Contributionsmentioning

confidence: 99%

Section: Determination Of Efsmentioning

confidence: 99%

Emission inventory of air pollutants and chemical speciation for specific anthropogenic sources based on local measurements in the Yangtze River Delta region, China

Huang

et al. 2021

Atmos. Chem. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…[7][8][9][10] Em outros estudos, é escolhido um ponto de coleta no interior do túnel (entre 30 e 200 m da entrada) e outro ponto no interior, mais perto da saída. [13][14][15] Como, por exemplo, no estudo realizado no túnel Shing Mun (Hong Kong), onde os autores coletaram a 686 m da entrada e a 350 m da saída. 6 Neste trabalho optou-se pelas coletas nos pontos 1 e 2 (Figura 2), ambos localizados no interior do túnel.…”

Section: Amostragemunclassified

Fatores De Emissão De Compostos Carbonílicos Medidos Em Um Túnel Do Rio De Janeiro, Brasil, Em Condições Reais De Dirigibilidade

et al. 2020

View full text Add to dashboard Cite

REAL-WORLD EMISSION FACTORS OF CARBONYL COMPOUNDS MEASURED IN A RIO DE JANEIRO TUNNEL, BRAZIL. Real-world vehicle emissions of carbonyls compounds (CC) were determined at the Rebouças Tunnel, Rio de Janeiro (Brazil). The tunnel is a two-bore tunnel with three lanes in each direction and has a length of 2840 m, divided in two sections. On average, approximately 5,000 vehicles (95% light duty) were passing the tunnel per hour. Sixteen samples were simultaneously collected 500 and 1500 m inside from the entrance. The main CC were formaldehyde, acetaldehyde, acetone, propionaldehyde and benzaldehyde. A total of 16 samples were collected in each point in 8 different days. In 5 days, CO and CO 2 were also monitored during the sampling period. Emission factors were calculated. Using the Pierson method, emission factors were 7.5 ± 2.6 and 13.8 ± 5.7 mg km-1 for formaldehyde and acetaldehyde, respectively. Using the fuel consumption method, values were 6.3 ± 2.1 and 11.8 ± 3.9 mg km-1 for the same compounds. The differences between both methods were lower than 20% and may be considered acceptable considering all the approximations in the calculations. Ozone forming potentials (OFP) were also estimated as 90.4 ± 37.3 and 70.7 ± 24.6 mg km-1 for formaldehyde and acetaldehyde, respectively.

show abstract

“…On-road emissions can be characterized in roadway tunnel studies since they provide emission data under real driving conditions as tunnels constitute a relative urban enclosure, where it is factual that external environmental factors have minimal influence. In consequence, studies in tunnels have been conducted over many locations around the world for more than 30 years such as in Los Angeles, United States of America (USA) [26], Vancouver, Canada [27], Scandinavia [28], Seoul [29], and Taiwan [30]), and they continue being carried out to date due to their effectiveness in various places such as Mexico [31], Beirut [32], China [33][34][35], and other countries [36]. Approximately 20 years ago, Mugica et al [37,38] determined the VOC profiles in the Chapultepec Mexico City tunnel, and their measurements have been applied for many years as inputs to photochemical modeling for the prediction of ozone concentrations across the MCMA.…”

Section: Introductionmentioning

confidence: 99%

Updating Real-World Profiles of Volatile Organic Compounds and Their Reactivity Estimation in Tunnels of Mexico City

et al. 2020

View full text Add to dashboard Cite

The main objective of this work was to bring to date the exhaust and evaporative volatile organic compound (VOC) profiles from light-duty gasoline vehicles, carrying out a sampling and analysis campaign in two tunnels of Mexico City. The abundance of exhaust-emission VOC profiles was the same in 2018 as in 1998 (alkanes > aromatics > olefins > acetylene), albeit exhibiting large differences (67%, 17%, 12%, and 4% for 2018, and 50%, 26%, 16%, and 8% for 1998, respectively). An important reduction of 69% and 77% in VOC concentrations was registered inside and outside of the tunnel, respectively, in comparison with 1998. In the ambient air, alkanes accounted for 77%, since high concentrations of liquefied petroleum (LP) gas species are still present. Ethylene, propylene, 1-butene, and toluene from tunnel emissions contributed prominently to ozone formation, while the most reactive gasoline vapors were pentenes, pentanes, and butenes, although the ozone formation potential due to VOCs in tunnel emissions and ambient air also had a significant reduction. These results demonstrate that strategies carried out in the last 20 years were successful in achieving a better air quality, although the aromatic and olefin content in gasolines needs to be further reduced to lower the concentrations of toxic and reactive species.

show abstract

Evaluation of emission factors for light-duty gasoline vehicles based on chassis dynamometer and tunnel studies in Shanghai, China

Cited by 45 publications

References 40 publications

Emission inventory of air pollutants and chemical speciation for specific anthropogenic sources based on local measurements in the Yangtze River Delta region, China

Emission inventory of air pollutants and chemical speciation for specific anthropogenic sources based on local measurements in the Yangtze River Delta region, China

Fatores De Emissão De Compostos Carbonílicos Medidos Em Um Túnel Do Rio De Janeiro, Brasil, Em Condições Reais De Dirigibilidade

Updating Real-World Profiles of Volatile Organic Compounds and Their Reactivity Estimation in Tunnels of Mexico City

Contact Info

Product

Resources

About