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DOI10.5194/acp-18-9375-2018
Non-polar organic compounds in autumn and winter aerosols in a typical city of eastern China: size distribution and impact of gas-particle partitioning on PM2.5 source apportionment
Han, Deming1; Fu, Qingyan2; Gao, Song2; Li, Li3; Ma, Yingge3; Qiao, Liping3; Xu, Hao1; Liang, Shan1; Cheng, Pengfei4; Chen, Xiaojia1; Zhou, Yong1; Yu, Jian Zhen5; Cheng, Jinping1
2018-07-04
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2018
卷号18期号:13页码:9375-9391
文章类型Article
语种英语
国家Peoples R China
英文摘要

Aerosol-associated non-polar organic compounds (NPOCs), including 15 polycyclic aromatic hydrocarbons (PAHs), 30 n-alkanes, 2 iso-alkanes, 5 hopanes and 5 steranes, were identified and quantified in PM2.5 samples using the thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS) method. The samples were mainly collected in autumn and winter in a typical city of eastern China. The total concentrations of NPOCs were 31.7-388.7 ngm(-3), and n-alkanes were the most abundant species (67.2 %). The heavy-molecular-weight PAHs (four-and fivering) contributed 67.9% of the total PAHs, and the middle-chain-length n-alkanes (C25-C34) were the most abundant (72.3 %) in n-alkanes. PAHs and n-alkanes were mainly distributed in the 0.56-1.00 mu m fraction, while P (hopanes C steranes) were associated with the 0.32-1.00 mu m fraction, suggesting condensation of combustion products was their important origin. The ratio-ratio plots indicated that NPOCs in the local area were affected by photochemical degradation. To reduce the uncertainty caused by only particle NPOC data for source apportionment, the particle and predicted gaseous-phase NPOCs, incorporated with other PM2.5 compound were used as input data for the positive matrix factorization (PMF) model. Eight factors were extracted for both cases: secondary aerosol formation, vehicle exhaust, industrial emission, coal combustion, biomass burning, ship emission, and dust and light NPOCs. These findings highlight the emissions from different aerosol-associated NPOC origins, which caused different size-specific distributions, photodegradation and gas-particle partitioning, which further affect PM2.5 source apportionment. Considering these effects on organic tracers will help us accurately identify the potential sources of aerosols and then asses the contributions from each source.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000437265300004
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; THERMAL DESORPTION-GC/MS ; PARTICULATE MERCURY ; MOLECULAR MARKERS ; HAZE EVENTS ; N-ALKANES ; POLLUTION ; URBAN ; MATTER ; IDENTIFICATION
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/26192
专题地球科学
作者单位1.Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China;
2.Shanghai Environm Monitor Ctr, Shanghai 200235, Peoples R China;
3.Shanghai Acad Environm Sci, State Environm Protect Key Lab Cause & Prevent Ur, Shanghai 200233, Peoples R China;
4.Jiujiang Univ, Sch Chem & Environm Engn, Jiujiang 332005, Jiangxi, Peoples R China;
5.Hong Kong Univ Sci & Technol, Dept Chem, Hong Kong 999077, Hong Kong, Peoples R China
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GB/T 7714
Han, Deming,Fu, Qingyan,Gao, Song,et al. Non-polar organic compounds in autumn and winter aerosols in a typical city of eastern China: size distribution and impact of gas-particle partitioning on PM2.5 source apportionment[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(13):9375-9391.
APA Han, Deming.,Fu, Qingyan.,Gao, Song.,Li, Li.,Ma, Yingge.,...&Cheng, Jinping.(2018).Non-polar organic compounds in autumn and winter aerosols in a typical city of eastern China: size distribution and impact of gas-particle partitioning on PM2.5 source apportionment.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(13),9375-9391.
MLA Han, Deming,et al."Non-polar organic compounds in autumn and winter aerosols in a typical city of eastern China: size distribution and impact of gas-particle partitioning on PM2.5 source apportionment".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.13(2018):9375-9391.
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