气候变化领域集成服务门户(CCPortal): Measurement report: Chemical components and C-13 and N-15 isotoperatios of fine aerosols over Tianjin, North China: year-round observations

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DOI	10.5194/acp-23-2119-2023
	Measurement report: Chemical components and C-13 and N-15 isotoperatios of fine aerosols over Tianjin, North China: year-round observations
	Dong, Zhichao; Pavuluri, Chandra Mouli; Xu, Zhanjie; Wang, Yu; Li, Peisen; Fu, Pingqing; Liu, Cong-Qiang
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	2119
结束页码	2143
卷号	23 期号:3 页码:25
英文摘要	To better understand the origins and seasonality of atmospheric aerosols in North China, we collected fine aerosols (PM2.5) at an urban site (Nankai District, ND) and a suburban site (Haihe Education Park, HEP) in Tianjin from July 2018 to July 2019. The PM2.5 was studied for carbonaceous, nitrogenous and ionic components and stable carbon and nitrogen isotope ratios of total carbon (delta(CTC)-C-13) and nitrogen (delta(NTN)-N-15). On average, the mass concentrations of PM2.5, organic carbon (OC), elemental carbon (EC) and water-soluble OC (WSOC) were higher in winter than in summer at both ND and HEP. SO42-, NO3- and NH4+ were the dominant ions, and their sum accounted for 89 % of the total ionic mass at ND and 87 % at HEP. NO3- and NH4+ peaked in winter and were at their minimum in summer, whereas SO42- was higher in summer than in all the other seasons at HEP and was comparable among the seasons, although it peaked in winter at ND. delta(CTC)-C-13 and delta(NTN)-N-15 were -26.5 %o to -21.9 %o and +1.01 %o to +22.8 %o at ND and -25.5 %o to -22.8 %o and +4.91 %o to +18.6 %o at HEP. Based on seasonal variations in the measured parameters, we found that coal and biomass combustion emissions are the dominant sources of PM2.5 in autumn and winter, while terrestrial and/or marine biological emissions are important in spring and summer in the Tianjin region, North China. In addition, our results implied that the secondary formation pathways of secondary organic aerosols in autumn/winter were different from those in spring/summer; i.e., they might be driven by NO3 radicals in the former period.
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:000932969000001
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/273245
作者单位	Tianjin University
推荐引用方式 GB/T 7714	Dong, Zhichao,Pavuluri, Chandra Mouli,Xu, Zhanjie,et al. Measurement report: Chemical components and C-13 and N-15 isotoperatios of fine aerosols over Tianjin, North China: year-round observations[J],2023,23(3):25.
APA	Dong, Zhichao.,Pavuluri, Chandra Mouli.,Xu, Zhanjie.,Wang, Yu.,Li, Peisen.,...&Liu, Cong-Qiang.(2023).Measurement report: Chemical components and C-13 and N-15 isotoperatios of fine aerosols over Tianjin, North China: year-round observations.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(3),25.
MLA	Dong, Zhichao,et al."Measurement report: Chemical components and C-13 and N-15 isotoperatios of fine aerosols over Tianjin, North China: year-round observations".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.3(2023):25.