Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-7897-2019 |
Chemical characterization and sources of submicron aerosols in the northeastern Qinghai-Tibet Plateau: insights from high-resolution mass spectrometry | |
Zhang, Xinghua1,2,3; Xu, Jianzhong1; Kang, Shichang1; Zhang, Qi4; Sun, Junying5 | |
2019-06-13 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:11页码:7897-7911 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | An Aerodyne high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) was deployed along with other online instruments to study the highly time resolved chemistry and sources of submicron aerosols (PM1) at Waliguan (WLG) Baseline Observatory, a high-altitude (3816 m a.s.l.) background station located at the northeast edge of the Qinghai-Tibet Plateau (QTP), during 1-31 July 2017. The average PM1 mass concentration during this study was 9.1 mu g m(-3) (ranging from 0.3 to 28.1 mu g m(-3)), which was distinctly higher than those (2.0-5.7 mu g m(-3)) measured with the Aerodyne AMS at other high-elevation sites in the southern or central QTP. Sulfate showed a dominant contribution (38.1 %) to PM1 at WLG followed by organics (34.5 %), ammonium (15.2 %), nitrate (8.1 %), BC (3.0 %) and chloride (1.1 %). Accordingly, bulk aerosols appeared to be slightly acidic throughout this study, mainly related to the enhanced sulfate contribution. All chemical species peaked at the accumulation mode, indicating the well-mixed and highly aged aerosol particles at WLG from long-range transport. Positive matrix factorization (PMF) on the high-resolution organic mass spectra resolved four distinct organic aerosol (OA) components, including a traffic-related hydrocarbon-like OA (HOA), a relatively fresh biomass burning OA (BBOA), an aged biomass burning OA (agBBOA) and a more-oxidized oxygenated OA (OOA). On average, the two relatively oxidized OAs, OOA and agBBOA, contributed 34.4% and 40.4% of organics, respectively, while the rest were 18.4% for BBOA and 6.8% for HOA. Source analysis for air masses showed that higher mass concentrations of PM1 and enhanced contributions of sulfate and biomass-burning-related OA components (agBBOA + BBOA) were from the northeast of the WLG with shorter transport distance, whereas lower PM1 mass concentrations with enhanced OOA contribution were from the west after long-range transport, suggesting their distinct aerosol sources and significant impacts of regional transport on aerosol mass loadings and chemistry at WLG. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000471597600002 |
WOS关键词 | POSITIVE MATRIX FACTORIZATION ; HIGH-ALTITUDE SITE ; ORGANIC AEROSOL ; INORGANIC AEROSOLS ; NORTHERN BOUNDARY ; BLACK CARBON ; RIVER DELTA ; CHINA ; EMISSIONS ; TRANSPORT |
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/184027 |
专题 | 地球科学 |
作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China; 2.China Meteorol Adm, Inst Arid Meteorol, Key Lab Arid Climat Change & Disaster Reduct CMA, Key Lab Arid Climat Change & Reducing Disaster Ga, Lanzhou 730020, Gansu, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Univ Calif Davis, Dept Environm Toxicol, Davis, CA 95616 USA; 5.China Meteorol Adm, Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Xinghua,Xu, Jianzhong,Kang, Shichang,et al. Chemical characterization and sources of submicron aerosols in the northeastern Qinghai-Tibet Plateau: insights from high-resolution mass spectrometry[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(11):7897-7911. |
APA | Zhang, Xinghua,Xu, Jianzhong,Kang, Shichang,Zhang, Qi,&Sun, Junying.(2019).Chemical characterization and sources of submicron aerosols in the northeastern Qinghai-Tibet Plateau: insights from high-resolution mass spectrometry.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(11),7897-7911. |
MLA | Zhang, Xinghua,et al."Chemical characterization and sources of submicron aerosols in the northeastern Qinghai-Tibet Plateau: insights from high-resolution mass spectrometry".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.11(2019):7897-7911. |
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