Measurement report: Effects of anthropogenic emissions and environmental factors on the formation of biogenic secondary organic aerosol (BSOA) in a coastal city of southeastern China
文献类型：期刊论文
| 作者 | Hong, Youwei; Xu, Xinbei; Liao, Dan; Liu, Taotao; Ji, Xiaoting; Xu, Ke; Liao, Chunyang ; Wang, Ting; Lin, Chunshui; Chen, Jinsheng
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| 刊名 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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| 出版日期 | 2022-06-16 |
| 卷号 | 22期号:11页码:7827-7841 |
| 关键词 | ALPHA-PINENE INITIATED OXIDATION ISOPRENE IMPACT NOX OH PHOTOOXIDATION VOLATILITY AMMONIA MIXTURE |
| ISSN号 | 1680-7316 |
| 英文摘要 | To better understand the formation of biogenic secondary organic aerosol (BSOA), aerosol samples with a 4 h time resolution were collected during summer and winter in the southeast of China, along with online measurements of trace gases, aerosol chemical compositions, and meteorological parameters. The samples were analyzed by gas chromatography-mass spectrometry for PM2.5-bound secondary organic aerosol (SOA) tracers, including isoprene (SOA(I)), alpha/beta-pinene (SOA(M)), beta-caryophyllene (SOA(C)), and toluene (ASOA). The average concentrations of total SOA tracers in winter and summer were 38.8 and 111.9 ng m(-3), respectively, with the predominance of SOA(M) (70.1 % and 45.8 %), followed by SOA(I) (14.0 % and 45.6 %), ASOA (11.0 % and 6.2 %) and SOA(C) (4.9 % and 2.3 %). Compared to those in winter, the majority of BSOA tracers in summer showed significant positive correlations with O-x (O-3+NO2) (r = 0.443-0.808), HONG (r = 0.299-0.601), ultraviolet (UV) (r = 0.382-0.588) and temperature (T) (r = 0.529-0.852), indicating the influence of photochemical oxidation under relatively clean conditions. However, in winter, BSOA tracers were significantly correlated with PM2.5 (r = 0.407-0.867), NO3- (r = 0.416-0.884), SO42- (r = 0.419-0.813), and NH3 (r = 0.440-0.757), attributed to the contributions of anthropogenic emissions. Major BSOA tracers in both seasons were linearly correlated with aerosol acidity (pH) (r = 0.421-0.752), liquid water content (LWC) (r = 0.403-0.876) and SO42- (r = 0.419-0.813). The results indicated that acid-catalyzed reactive uptake onto sulfate aerosol particles enhanced the formation of BSOA. In summer, the clean air mass originated from the ocean, and chlorine depletion was observed. We also found that concentrations of the total SOA tracers were correlated with HCl (R-2 = 0.545) and chlorine ions (r = 0.280-0.639) in PM2.5, reflecting the contribution of Cl-initiated volatile organic compound (VOC) oxidations to the formation of SOA. In winter, the northeast dominant wind direction brought continental polluted air mass to the monitoring site, affecting the transformation of BSOA tracers. This implied that anthropogenic emissions, atmospheric oxidation capacity and halogen chemistry have significant effects on the formation of BSOA in the southeast coastal area. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47569]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Xiamen Huaxia Univ, Coll Environm & Publ Hlth, Xiamen 361024, Peoples R China 2.Hebei Univ, Sch Life Sci, Baoding 071000, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China 4.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Xiamen 361021, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hong, Youwei,Xu, Xinbei,Liao, Dan,et al. Measurement report: Effects of anthropogenic emissions and environmental factors on the formation of biogenic secondary organic aerosol (BSOA) in a coastal city of southeastern China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2022,22(11):7827-7841. |
| APA | Hong, Youwei.,Xu, Xinbei.,Liao, Dan.,Liu, Taotao.,Ji, Xiaoting.,...&Chen, Jinsheng.(2022).Measurement report: Effects of anthropogenic emissions and environmental factors on the formation of biogenic secondary organic aerosol (BSOA) in a coastal city of southeastern China.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(11),7827-7841. |
| MLA | Hong, Youwei,et al."Measurement report: Effects of anthropogenic emissions and environmental factors on the formation of biogenic secondary organic aerosol (BSOA) in a coastal city of southeastern China".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.11(2022):7827-7841. |
入库方式： OAI收割
来源：生态环境研究中心
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