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Tytuł:
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Emission characteristics and light absorption apportionment of carbonaceous aerosols: A tunnel test conducted in an urban with fully enclosed use of E10 petrol.
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Autorzy:
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Liu X; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China; School of Environment, Beijing Normal University, Beijing, 100875, China. Electronic address: xinhui_.
Zhu R; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China; Research Centre of Engineering and Technology for Synergetic Control of Environmental Pollution and Carbon Emissions of Henan Province, Zhengzhou University, Zhengzhou, 450001, China. Electronic address: .
Jin B; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China. Electronic address: .
Zu L; State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China. Electronic address: .
Wang Y; State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China. Electronic address: .
Wei Y; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China. Electronic address: .
Zhang R; School of Ecology and Environment, Zhengzhou University, Zhengzhou, 450001, China. Electronic address: .
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Źródło:
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Environmental research [Environ Res] 2023 Jan 01; Vol. 216 (Pt 3), pp. 114701. Date of Electronic Publication: 2022 Nov 01.
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Typ publikacji:
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Journal Article; Research Support, Non-U.S. Gov't
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Język:
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English
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Imprint Name(s):
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Publication: <2000- > : Amsterdam : Elsevier
Original Publication: New York, Academic Press.
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MeSH Terms:
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Gasoline*/analysis
Air Pollutants*/analysis
Vehicle Emissions/analysis ; Aerosols/analysis ; Soot/analysis ; Carbon/analysis ; Ethanol/analysis ; Environmental Monitoring/methods
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Contributed Indexing:
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Keywords: Aethalometer AE33; Carbonaceous aerosol; E10-fueled vehicle; Emission factor; Tunnel test
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Substance Nomenclature:
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0 (Gasoline)
0 (Air Pollutants)
0 (Vehicle Emissions)
0 (Aerosols)
0 (Soot)
7440-44-0 (Carbon)
3K9958V90M (Ethanol)
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Entry Date(s):
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Date Created: 20221104 Date Completed: 20221129 Latest Revision: 20230201
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Update Code:
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20240105
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DOI:
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10.1016/j.envres.2022.114701
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PMID:
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36332670
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To reduce the heavy dependence on petroleum, bioethanol has been increasingly employed as an alternative and sustainable transportation fuel. However, the characteristics of black carbon (BC) emissions from E10 petrol vehicles (i.e., ethanol-gasoline containing 10% ethanol) are still unclear, especially under real driving conditions. Here, a tunnel test was conducted during a cold winter. This tunnel was characterized by heavy traffic comprising more than 98% E10-fueled gasoline vehicles (GVs). Real-time BC concentrations, traffic parameters and meteorological conditions were recorded during the sampling campaign. The average BC concentration inside the tunnel (10.94 ± 5.02 μg m -3 ) was almost twice the background concentration. Based on aethalometer AE33 in situ measurements and the minimum R-squared (MRS) method, real-time aerosol light absorption was apportioned. The light absorption proportions of BC, primary brown carbon (BrC 1 ) and secondary brown carbon (BrC 2 ) were 79.86%, 2.78% and 17.36%, respectively, at 370 nm. The BC emission factor (EF BC ) of the E10-fueled vehicles was 1.09 ± 0.49 mg km -1 ·veh -1 and 15.24 ± 6.85 mg·(kg fuel) -1 , lower than those of traditional gasoline fueled vehicles in previous studies. This study can support the compilation of vehicular BC emission inventories, provide recommendations for biofuel policies and contribute to comprehensively understanding the climatic impact of E10 petrol.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier Inc. All rights reserved.)
