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DOI10.1016/j.atmosres.2020.105291
Physiochemistry characteristics and sources of submicron aerosols at the background area of North China Plain: Implication of air pollution control in heating season
Yan Y.; Liu Z.; Gao W.; Li J.; Zhang X.; Chai W.; Bai J.; Hu B.; Wang Y.
Date Issued2021
ISSN0169-8095
Volume249
Other AbstractAerosol physiochemistry and sources in the background regions of North China Plain (NCP) remains poorly characterized. Here we present a comprehensive characterization of aerosol composition and sources at an NCP mountain site during heating periods (November 12 to December 24, 2018) using a Quadrupole Aerosol Mass Spectrometer (Q-AMS). The average mass concentration of non-refractory submicron aerosols (NR-PM1) was 22.6 ± 29.9 μg/m3, in which organic aerosol (OA) and nitrate showed comparable contribution of 32.8% and 35.1%, respectively, followed by ammonium (15.3%), sulfate (13.9%) and chloride (2.6%). Secondary inorganic aerosol (SIA) was found to dominated in polluted days (70%) which the aerosol level is 15 times higher than that in clean days which dominated by organics (54%). In addition, organics, nitrate and sulfate showed similar unimodal size distributions peaked at 600–800 nm in polluted days, which appear to be internally mixed that originated from regional transportation of aged aerosol. Whereas, the different size distribution mode of organics with SIA that peaked at smaller particle size (200–300 nm) in cleans days suggested contributions from local emissions. Positive matrix factorization (PMF) and ME2 analysis showed oxidized organic aerosols (OOA) dominated the total OA (64%), while the contribution of the hydrocarbons-like OA (HOA) and biomass burning OA (BBOA) was comparable (15–21%). To evaluate the effect of air pollution control on the background aerosols chemistry, interannual variations in aerosol chemical compositions during heating periods in 2014–2018 were deduced combined with the trajectory cluster analysis. The results showed the aerosol source region was mainly from the urban agglomeration of NCP, which showed the largest decrease in aerosol mass concentration during the past five years. In addition, the aerosol compositions became to be SIA dominated gradually under different air mass influence condition, suggesting the air pollution control is more effective for the reduction of primary emissions than the secondary species. © 2020 Elsevier B.V.
enkeywordsBackground area; Chemical compositions and sources; North China Plain; Submicron aerosols
Language英语
scopus keywordsAerosols; Air pollution; Chemical analysis; Chlorine compounds; Cluster analysis; Factorization; Nitrates; Particle size; Particle size analysis; Size distribution; Sulfur compounds; Aerosol chemical composition; Aerosol mass concentration; Aerosol mass spectrometers; Interannual variation; Positive Matrix Factorization; Regional transportation; Secondary inorganic aerosol; Unimodal size distribution; Air pollution control; aerosol composition; atmospheric chemistry; atmospheric pollution; background level; heating; mass spectrometry; pollution control; source apportionment; China; North China Plain
journalAtmospheric Research
Document Type期刊论文
Identifierhttp://gcip.llas.ac.cn/handle/2XKMVOVA/141655
AffiliationState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China; University of Chinese Academy of Sciences, Beijing, 100049, China; LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, Key Laboratory of Arid Climatic Change and Disaster Reduction of CMA, Institute of Arid Meteorology, China Meteorological Administration, Lanzhou, 730020, China
Recommended Citation
GB/T 7714
Yan Y.,Liu Z.,Gao W.,et al. Physiochemistry characteristics and sources of submicron aerosols at the background area of North China Plain: Implication of air pollution control in heating season[J],2021,249.
APA Yan Y..,Liu Z..,Gao W..,Li J..,Zhang X..,...&Wang Y..(2021).Physiochemistry characteristics and sources of submicron aerosols at the background area of North China Plain: Implication of air pollution control in heating season.Atmospheric Research,249.
MLA Yan Y.,et al."Physiochemistry characteristics and sources of submicron aerosols at the background area of North China Plain: Implication of air pollution control in heating season".Atmospheric Research 249(2021).
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