气候变化领域集成服务门户(CCPortal): 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

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DOI	10.5194/acp-22-7827-2022
	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
	Hong, Youwei; Xu, Xinbei; Liao, Dan; Liu, Taotao; Ji, Xiaoting; Xu, Ke; Liao, Chunyang; Wang, Ting; Lin, Chunshui; Chen, Jinsheng
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	7827
结束页码	7841
卷号	22 期号:11 页码:15
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.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000811634700001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273615
作者单位	Chinese Academy of Sciences; Institute of Urban Environment, CAS; Chinese Academy of Sciences; Institute of Urban Environment, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Hebei University; Xiamen Huaxia University; Chinese Academy of Sciences; Research Center for Eco-Environmental Sciences (RCEES); Chinese Academy of Sciences; Institute of Earth Environment, CAS
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],2022,22(11):15.
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),15.
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):15.