IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Characteristics and sources of amine-containing particles in the urban atmosphere of Liaocheng, a seriously polluted city in North China during the COVID-19 outbreak
Li, Zheng1; Zhou, Ruiwen1; Wang, Yiqiu2; Wang, Gehui3; Chen, Min1; Li, Yuanyuan1; Wang, Yachen1; Yi, Yanan1; Hou, Zhanfang1; Guo, Qingchun1; Meng, Jingjing1,4
Corresponding AuthorMeng, Jingjing(mengjingjing@lcu.edu.cn)
2021-11-15
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
Volume289Pages:10
AbstractThe Chinese government issued an unprecedentedly strict lockdown policy to control the spread of the novel coronavirus disease 2019 (COVID-19), significantly mitigating air pollution because of the dramatic reduction of industrial and traffic emissions. To explore the impact of COVID-19 lockdown (LCD) on organic aerosols, the mixing states and evolution processes of amine-containing particles were studied using a single particle aerosol mass spectrometer from January to March 2020 in Liaocheng, which is a seriously polluted city in North China. The counts and percentages of amine-containing particles in total obtained particles during the pre-LCD (547832, 29.8 %) were higher than those during the LCD (283983, 20.7 %) and post-LCD (102026, 18.4 %), mainly due to the reduced emission strength of amines and suppressed gas-to-particle partitioning of amines during the LCD and post-LCD. (74)(C2H5)(2)NH2+ was the most abundant amine marker, which accounted for 98.2 %, 98.4 %, and 96.7 % of all amine-containing particles during the pre-LCD, LCD, and post-LCD, respectively. Correlation analysis and temporal variations indicated that the gas-to-particle partitioning of amines was facilitated by the stronger acidic environment and lower temperature, while the effect of RH and aerosol liquid water content was minor. The A-OC particles were the most abundant type (accounting for similar to 40 %) throughout the observation period. The temporal profiles and correlation analysis suggested that the impact of the increased O-3 on the amines and their oxidation products (e.g., trimethylamine oxide) was minor. The identified particle types, correlation analysis, and the potential source contribution function results implied that the amine-containing particles were mainly derived from local and surrounding sources during the LCD, while those were mainly affected by long-range transport during the pre-LCD and post-LCD. Our results could deepen the comprehension of the sources and atmospheric processing of amines in the urban area of North China during the COVID-19 outbreak.
KeywordAmine-containing particles Diethylamine (DEA) Gas-to-particle partitioning Air quality COVID-19 lockdown
DOI10.1016/j.envpol.2021.117887
WOS KeywordSECONDARY AEROSOL FORMATION ; WATER-SOLUBLE IONS ; PEARL RIVER-DELTA ; SINGLE-PARTICLE ; SULFURIC-ACID ; AMBIENT AEROSOL ; MIXING STATE ; AIR-QUALITY ; RURAL SITE ; PM2.5
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Science Foundation of China[41505112] ; National Science Foundation of China[41702373] ; Natural Science Foundation of Shandong Province[ZR2020MD113] ; Open Funds of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences[SKLLQG2020]
WOS Research AreaEnvironmental Sciences & Ecology
Funding OrganizationNational Science Foundation of China ; 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
WOS SubjectEnvironmental Sciences
WOS IDWOS:000697053600008
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/17026
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorMeng, Jingjing
Affiliation1.Liaocheng Univ, Sch Geog & Environm, Liaocheng 252000, Shandong, Peoples R China
2.Liaocheng Environm Informat & Monitoring Ctr, Liaocheng 252000, Shandong, Peoples R China
3.East China Normal Univ, Sch Geog Sci, Key Lab Geog Informat Sci, Minist Educ, Shanghai 200062, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
Recommended Citation
GB/T 7714
Li, Zheng,Zhou, Ruiwen,Wang, Yiqiu,et al. Characteristics and sources of amine-containing particles in the urban atmosphere of Liaocheng, a seriously polluted city in North China during the COVID-19 outbreak[J]. ENVIRONMENTAL POLLUTION,2021,289:10.
APA Li, Zheng.,Zhou, Ruiwen.,Wang, Yiqiu.,Wang, Gehui.,Chen, Min.,...&Meng, Jingjing.(2021).Characteristics and sources of amine-containing particles in the urban atmosphere of Liaocheng, a seriously polluted city in North China during the COVID-19 outbreak.ENVIRONMENTAL POLLUTION,289,10.
MLA Li, Zheng,et al."Characteristics and sources of amine-containing particles in the urban atmosphere of Liaocheng, a seriously polluted city in North China during the COVID-19 outbreak".ENVIRONMENTAL POLLUTION 289(2021):10.
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