Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Chemical characterization of PM2.5 emitted from on-road heavy-duty diesel trucks in China
https://orcid.org/0000-0003-2871-979X
Abstract Heavy-duty diesel trucks (HDDTs) are gaining more attention because of their contribution to NOX and PM2.5 emissions. To evaluate their contribution to ambient fine particulate matter (PM2.5), not only their emission factors, but also their source profile is required. We conducted on-road emissions tests to characterize the PM2.5 emission, documenting per second mass emission rates from in-use HDDTs in China, using portable emissions measurement systems. The average PM2.5 emission factors for pre-EURO and EURO 1 HDDTs were 1.104 g/km and 0.822 g/km, equivalent to 6.106 g/kg and 3.132 g/kg based on fuel consumption. Element carbon (EC) and organic carbon (OC) were the major components: EC accounted for 45–65% of PM2.5 for pre-EURO HDDTs and 36–69% for EURO 1 HDDTs, while the OC fraction for pre-EURO and EURO 1 HDDTs ranged from 20 to 31% and 19–31%, respectively. Thus, the average EC emission factors for pre-EURO and EURO 1 HDDTs were 0.667 g/km and 0.502 g/km, showing that implementation of tighter emission standards resulted in a 25% EC output reduction from pre-EURO to EURO 1 vehicles. Sulfate, comprising about 1% of PM2.5 mass, is still an abundant species in PM2.5 from HDDTs because of the high sulfur content in diesel fuel in China. Using these data, we updated national PM2.5 emission profiles for pre-EURO and EURO 1 HDDTs.
Highlights Real-world PM2.5 emissions form in-use HDDTs were measured using PEMS. Emission factors and composition of PM2.5 for tested HDDTs were characterized. EC and OC contributed 60% and 29% of the PM2.5 mass, respectively. Water soluble ions and elements accounted for less than 10% of the PM2.5 mass.
Chemical characterization of PM2.5 emitted from on-road heavy-duty diesel trucks in China
https://orcid.org/0000-0003-2871-979X
Abstract Heavy-duty diesel trucks (HDDTs) are gaining more attention because of their contribution to NOX and PM2.5 emissions. To evaluate their contribution to ambient fine particulate matter (PM2.5), not only their emission factors, but also their source profile is required. We conducted on-road emissions tests to characterize the PM2.5 emission, documenting per second mass emission rates from in-use HDDTs in China, using portable emissions measurement systems. The average PM2.5 emission factors for pre-EURO and EURO 1 HDDTs were 1.104 g/km and 0.822 g/km, equivalent to 6.106 g/kg and 3.132 g/kg based on fuel consumption. Element carbon (EC) and organic carbon (OC) were the major components: EC accounted for 45–65% of PM2.5 for pre-EURO HDDTs and 36–69% for EURO 1 HDDTs, while the OC fraction for pre-EURO and EURO 1 HDDTs ranged from 20 to 31% and 19–31%, respectively. Thus, the average EC emission factors for pre-EURO and EURO 1 HDDTs were 0.667 g/km and 0.502 g/km, showing that implementation of tighter emission standards resulted in a 25% EC output reduction from pre-EURO to EURO 1 vehicles. Sulfate, comprising about 1% of PM2.5 mass, is still an abundant species in PM2.5 from HDDTs because of the high sulfur content in diesel fuel in China. Using these data, we updated national PM2.5 emission profiles for pre-EURO and EURO 1 HDDTs.
Highlights Real-world PM2.5 emissions form in-use HDDTs were measured using PEMS. Emission factors and composition of PM2.5 for tested HDDTs were characterized. EC and OC contributed 60% and 29% of the PM2.5 mass, respectively. Water soluble ions and elements accounted for less than 10% of the PM2.5 mass.
Chemical characterization of PM2.5 emitted from on-road heavy-duty diesel trucks in China
https://orcid.org/0000-0003-2871-979X
Abstract Heavy-duty diesel trucks (HDDTs) are gaining more attention because of their contribution to NOX and PM2.5 emissions. To evaluate their contribution to ambient fine particulate matter (PM2.5), not only their emission factors, but also their source profile is required. We conducted on-road emissions tests to characterize the PM2.5 emission, documenting per second mass emission rates from in-use HDDTs in China, using portable emissions measurement systems. The average PM2.5 emission factors for pre-EURO and EURO 1 HDDTs were 1.104 g/km and 0.822 g/km, equivalent to 6.106 g/kg and 3.132 g/kg based on fuel consumption. Element carbon (EC) and organic carbon (OC) were the major components: EC accounted for 45–65% of PM2.5 for pre-EURO HDDTs and 36–69% for EURO 1 HDDTs, while the OC fraction for pre-EURO and EURO 1 HDDTs ranged from 20 to 31% and 19–31%, respectively. Thus, the average EC emission factors for pre-EURO and EURO 1 HDDTs were 0.667 g/km and 0.502 g/km, showing that implementation of tighter emission standards resulted in a 25% EC output reduction from pre-EURO to EURO 1 vehicles. Sulfate, comprising about 1% of PM2.5 mass, is still an abundant species in PM2.5 from HDDTs because of the high sulfur content in diesel fuel in China. Using these data, we updated national PM2.5 emission profiles for pre-EURO and EURO 1 HDDTs.
Highlights Real-world PM2.5 emissions form in-use HDDTs were measured using PEMS. Emission factors and composition of PM2.5 for tested HDDTs were characterized. EC and OC contributed 60% and 29% of the PM2.5 mass, respectively. Water soluble ions and elements accounted for less than 10% of the PM2.5 mass.
Chemical characterization of PM2.5 emitted from on-road heavy-duty diesel trucks in China
Zhang, Yingzhi (Autor:in) / Yao, Zhiliang (Autor:in) / Shen, Xianbao (Autor:in) / Liu, Huan (Autor:in) / He, Kebin (Autor:in)
Atmospheric Environment ; 122 ; 885-891
10.07.2015
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
PM<inf>2.5</inf> , Chemical composition , Emission factor , PEMS , OC , EC
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