DOI: 10.1016/j.atmosenv.2015.03.043
Scopus记录号: 2-s2.0-84925424480
论文题名: 4-Nitrophenol, 1-nitropyrene, and 9-nitroanthracene emissions in exhaust particles from diesel vehicles with different exhaust gas treatments
作者: Inomata S ; , Fushimi A ; , Sato K ; , Fujitani Y ; , Yamada H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 110 起始页码: 93
结束页码: 102
语种: 英语
英文关键词: Diesel exhaust particles (DEPs)
; LC/MS
; Nitro-PAH
; Nitrophenol
; TD-GC/MS
Scopus关键词: Airships
; Aromatic hydrocarbons
; Catalysts
; Catalytic oxidation
; Chromatography
; Diesel locomotives
; Exhaust gases
; Gas adsorption
; Gas chromatography
; Gas emissions
; Hydrocarbons
; Liquid chromatography
; Mass spectrometry
; Organic compounds
; Phenols
; Polycyclic aromatic hydrocarbons
; Reduction
; Spectrometry
; Systematic errors
; Urea
; Vehicles
; Volatile organic compounds
; Diesel exhaust particles
; LC/MS
; Liquid chromatography/mass spectrometry
; Nitrophenols
; Nitropolycyclic aromatic hydrocarbons
; Selective catalytic reduction systems
; Td-gc/ms
; Thermal desorption gas chromatography/mass spectrometries
; Selective catalytic reduction
; 1 nitropyrene
; 4 nitrophenol
; 9 nitroanthracene
; anthracene derivative
; hydrocarbon
; nitro derivative
; polycyclic aromatic hydrocarbon
; unclassified drug
; atmospheric pollution
; catalyst
; diesel engine
; emission inventory
; exhaust emission
; PAH
; phenol
; pyrene
; volatile organic compound
; aerosol
; Article
; catalyst
; diesel engine
; exhaust gas
; liquid chromatography
; mass fragmentography
; oxidation
; particulate matter
; priority journal
; systematic error
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The dependence of nitro-organic compound emissions in automotive exhaust particles on the type of aftertreatment used was investigated. Three diesel vehicles with different aftertreatment systems (an oxidation catalyst, vehicle-DOC; a particulate matter and NOx reduction system, vehicle-DPNR; and a urea-based selective catalytic reduction system, vehicle-SCR) and a gasoline car with a three-way catalyst were tested. Nitro-polycyclic aromatic hydrocarbons (nitro-PAHs) and nitrophenols in the particles emitted were analyzed by thermal desorption gas chromatography/mass spectrometry and liquid chromatography/mass spectrometry. The secondary production of nitro-organic compounds on the filters used to collect particles and the adsorption of gaseous nitro-organic compounds by the filters were evaluated. Emissions of 1-nitropyrene, 9-nitroanthracene, and 4-nitrophenol in the diesel exhaust particles were then quantified. The NOx reduction process in vehicle-DPNR appeared to remove nitro-hydrocarbons efficiently but not to remove nitro-oxygenated hydrocarbons efficiently. The nitro-PAH emission factors were lower for vehicle-DOC when it was not fitted with a catalyst than when it was fitted with a catalyst. The 4-nitrophenol emission factors were also lower for vehicle-DOC with a catalyst than vehicle-DOC without a catalyst, suggesting that the oxidation catalyst was a source of both nitro-PAHs and 4-nitrophenol. The time-resolved aerosol mass spectrometry data suggested that nitro-organic compounds are mainly produced when an engine is working under load. The presence of 4-nitrophenol in the particles was not confirmed statistically because of interference from gaseous 4-nitrophenol. Systematic errors in the estimated amounts of gaseous 1-nitropyrene and 9-nitroanthracene adsorbed onto the filters and the estimated amounts of volatile nitro-organic compounds that evaporated during sampling and during post-sampling conditioning could not be excluded. An analytical method in which all gaseous compounds are absorbed before particles are collected, and in which the volatile compounds are derivatized, would improve the precision and the accuracy of the data. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81777
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, Japan; National Traffic Safety and Environment Laboratory, 7-42-27 Jindaiji-Higashimachi, Chofu, Tokyo, Japan
Recommended Citation:
Inomata S,, Fushimi A,, Sato K,et al. 4-Nitrophenol, 1-nitropyrene, and 9-nitroanthracene emissions in exhaust particles from diesel vehicles with different exhaust gas treatments[J]. Atmospheric Environment,2015-01-01,110