Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-10865-2019 |
Insight into the composition of organic compounds (>= C-6) in PM2.5 in wintertime in Beijing, China | |
Lyu, Ruihe1,2,6; Shi, Zongbo2; Alam, Mohammed Salim2; Wu, Xuefang2,4; Liu, Di2; Vu, Tuan V.2; Stark, Christopher2; Fu, Pingqing3; Feng, Yinchang1; Harrison, Roy M.2,5 | |
2019-08-29 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:16页码:10865-10881 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; England; Saudi Arabia |
英文摘要 | Organic matter is a major component of PM2.5 in megacities. In order to understand the detailed characteristics of organic compounds (>= C-6) at a molecular level on nonhaze and haze days, we determined more than 300 organic compounds in the PM2.5 from an urban area of Beijing collected in November-December 2016 using two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC x GC-ToF-MS). The identified organic compounds have been classified into groups, and quantitative methods were used to calculate their concentrations. Primary emission sources make significant contributions to the atmospheric organic compounds, and six groups (including nalkanes, polycyclic aromatic hydrocarbons - PAHs, levoglucosan, branched alkanes, n-alkenes and alkyl-benzenes) account for 66 % of total identified organic compound mass. In addition, PAHs and oxygenated PAHs (O-PAHs) were abundant amongst the atmospheric organic compounds on both haze and non-haze days. The most abundant hydrocarbon groups were observed with a carbon atom range of C-19-C-28. In addition, the total concentration of unidentified compounds present in the chromatogram was estimated in the present study. The total identified compounds account for approximately 47 % of total organic compounds (>= C-6) in the chromatogram on both the non-haze and haze days. The total mass concentrations of organic compounds (>= C-6) in the chromatogram were 4.0 and 7.4 mu g m(-3) on the non-haze and haze days, respectively, accounting for 26.4 % and 18.5 % of organic matter, respectively, on those days estimated from the total organic carbon concentration. Ratios of individual compound concentrations between haze and non-haze days do not give a clear indication of the degree of oxidation, but the overall distribution of organic compounds in the chromatogram provides strong evidence that the organic aerosol is less GC volatile and hence more highly oxidized on haze days. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000483990500001 |
WOS关键词 | POLYCYCLIC AROMATIC-HYDROCARBONS ; FLIGHT MASS-SPECTROMETRY ; 2-DIMENSIONAL GAS-CHROMATOGRAPHY ; ALIPHATIC CARBONYL-COMPOUNDS ; ATMOSPHERIC FINE PARTICLES ; LONG-RANGE TRANSPORT ; SOURCE APPORTIONMENT ; PARTICULATE MATTER ; MOLECULAR TRACERS ; POLLUTION CHARACTERISTICS |
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/186289 |
专题 | 地球科学 |
作者单位 | 1.Nankai Univ, Coll Environm Sci & Engn, State Environm Protect Key Lab Urban Ambient Air, Tianjin 300350, Peoples R China; 2.Univ Birmingham, Sch Geog Earth & Environm Sci, Div Environm Hlth & Risk Management, Birmingham B15 2TT, W Midlands, England; 3.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300350, Peoples R China; 4.China Univ Geosci, Reg Dept Geol & Mineral Resources, Xueyuan Rd 29, Beijing 100083, Peoples R China; 5.King Abdulaziz Univ, Dept Environm Sci, Ctr Excellence Environm Studies, POB 80203, Jeddah 21589, Saudi Arabia; 6.Hebei Normal Univ Nationalities, Coll Resource & Environm Sci, Chengde 067000, Peoples R China |
推荐引用方式 GB/T 7714 | Lyu, Ruihe,Shi, Zongbo,Alam, Mohammed Salim,et al. Insight into the composition of organic compounds (>= C-6) in PM2.5 in wintertime in Beijing, China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(16):10865-10881. |
APA | Lyu, Ruihe.,Shi, Zongbo.,Alam, Mohammed Salim.,Wu, Xuefang.,Liu, Di.,...&Harrison, Roy M..(2019).Insight into the composition of organic compounds (>= C-6) in PM2.5 in wintertime in Beijing, China.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(16),10865-10881. |
MLA | Lyu, Ruihe,et al."Insight into the composition of organic compounds (>= C-6) in PM2.5 in wintertime in Beijing, China".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.16(2019):10865-10881. |
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