Molecular Characteristics and Formation Mechanisms of Biogenic Secondary Organic Aerosols in the Summer Atmosphere at Mt. Tai on the North China Plain | |
Yi, Yanan3; Meng, Jingjing1,3; Hou, Zhanfang1,3; Yan, Li2; Liu, Xiaodi3; Fu, Mengxuan3; Li, Zheng3; Zhou, Ruiwen3; Wang, Yachen3; Wei, Benjie3 | |
刊名 | AEROSOL AND AIR QUALITY RESEARCH |
2019-12-01 | |
卷号 | 19期号:12页码:2671-2682 |
关键词 | Biogenic secondary organic aerosol (BSOA) Isoprene Aerosol acidity Temperature and relative humidity Anthropogenic pollutants |
ISSN号 | 1680-8584 |
DOI | 10.4209/aaqr.2019.10.0515 |
通讯作者 | Meng, Jingjing(mengjingjing@lcu.edu.cn) ; Hou, Zhanfang(houzhanfang@lcu.edu.cn) |
英文摘要 | To investigate the molecular characteristics and formation mechanisms of biogenic secondary organic aerosol (BSOA), daytime and nighttime PM2.5 samples were collected at the summit of Mt. Tai during the summer of 2016. The critical indicators of primary sources, such as elemental carbon (EC) and levoglucosan, displayed similar values during the daytime and nighttime, suggesting that changes in the boundary layer heights (BLHs) produced only inconsequential effects during the observation campaign. The molecular distributions of the BSOA were dominated by isoprene SOA tracers (68.5 +/- 42.6 ng m(-3)), followed by monoterpene (43.5 +/- 24.4 ng m(-3)) and beta-caryophyllene (16.3 +/- 8.6 ng m(-3)) SOA tracers. Due to the higher diurnal temperatures and solar radiation, the concentrations of all of the tracers were higher during the day than at night. The ratio of the combined cis-pinonic and cis-pinic acid to the MBTCA (P/M) was much lower than in Chinese cities and at the Tibetan background site, indicating that the monoterpene SOA was relatively aged in the mountainous atmosphere, in large part because of the stronger solar radiation at the peak of Mt. Tai. The concentrations of the BSOA products exhibited a significantly positive correlation with the level of ozone during the daytime (R-2 = 0.58-0.86) and the temperature over the whole sampling period (R-2 = 0.37-0.75), as higher temperatures can accelerate the emission of biogenic volatile organic compounds and the formation of SOA. By contrast, the BSOA tracers displayed a negative linear correlation with the relative humidity (RH) (R-2 = 0.43-0.84) and the in situ particle pH (pH(is)) (R-2 = 0.55-0.70) because high RH can inhibit the acid-catalyzed formation of BSOA due to the dilution of the aerosol acidity. No correlation between the BSOA tracers and anthropogenic pollutants (e.g., levoglucosan, SO42-, NO3- and EC) was observed during the daytime or nighttime, suggesting that BSOA tracers in the atmosphere of Mt. Tai during summer were primarily derived from the local oxidation of BVOCs rather than long-distance-transported anthropogenic emissions from the lowlands. |
资助项目 | China National Science Funds[41505112] ; China National Science Funds[41702373] ; Natural Science Foundation of Shandong Province[BS2015HZ002] ; Open Funds of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences[SKLLQG1509] ; Open Funds of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences[SKLLQG1504] |
WOS关键词 | DICARBOXYLIC-ACIDS ; SEASONAL-VARIATIONS ; CHEMICAL-COMPOSITION ; NIGHTTIME OXIDATION ; RELATIVE-HUMIDITY ; ALPHA-DICARBONYLS ; URBAN ATMOSPHERE ; PM2.5 AEROSOLS ; COASTAL CITY ; TRACERS |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
出版者 | TAIWAN ASSOC AEROSOL RES-TAAR |
WOS记录号 | WOS:000500942500005 |
资助机构 | China National Science Funds ; Natural Science Foundation of Shandong Province ; Open Funds of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences |
内容类型 | 期刊论文 |
源URL | [http://ir.ieecas.cn/handle/361006/12966] |
专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室(2010~) 地球环境研究所_粉尘与环境研究室 |
通讯作者 | Meng, Jingjing; Hou, Zhanfang |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Key Lab Aerosol Chem & Phys, Xian 710075, Shaanxi, Peoples R China 2.Chinese Acad Environm Planning, Beijing 100012, Peoples R China 3.Liaocheng Univ, Sch Environm & Planning, Liaocheng 252000, Shandong, Peoples R China |
推荐引用方式 GB/T 7714 | Yi, Yanan,Meng, Jingjing,Hou, Zhanfang,et al. Molecular Characteristics and Formation Mechanisms of Biogenic Secondary Organic Aerosols in the Summer Atmosphere at Mt. Tai on the North China Plain[J]. AEROSOL AND AIR QUALITY RESEARCH,2019,19(12):2671-2682. |
APA | Yi, Yanan.,Meng, Jingjing.,Hou, Zhanfang.,Yan, Li.,Liu, Xiaodi.,...&Wei, Benjie.(2019).Molecular Characteristics and Formation Mechanisms of Biogenic Secondary Organic Aerosols in the Summer Atmosphere at Mt. Tai on the North China Plain.AEROSOL AND AIR QUALITY RESEARCH,19(12),2671-2682. |
MLA | Yi, Yanan,et al."Molecular Characteristics and Formation Mechanisms of Biogenic Secondary Organic Aerosols in the Summer Atmosphere at Mt. Tai on the North China Plain".AEROSOL AND AIR QUALITY RESEARCH 19.12(2019):2671-2682. |
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