IEECAS OpenIR  > 粉尘与环境研究室
Organic aerosol formation and aging processes in Beijing constrained by size-resolved measurements of radiocarbon and stable isotopic C-13
Ni, Haiyan1,2; Huang, Ru-Jin1,3; Yao, Peng2; Cosijn, Max M.2; Kairys, Norbertas2; Zhong, Haobin1; Dusek, Ulrike2
Corresponding AuthorHuang, Ru-Jin(rujin.huang@ieecas.cn) ; Dusek, Ulrike(u.dusek@rug.nl)
2022
Source PublicationENVIRONMENT INTERNATIONAL
ISSN0160-4120
Volume158Pages:10
AbstractThis study investigates the sources and atmospheric processes of size-resolved carbonaceous aerosols in winter 2018 in urban Beijing, based on analysis of dual-carbon isotopes (i.e., radiocarbon and the stable isotope C-13). We found a size dependence of fossil source contributions to elemental carbon (EC), but no clear size dependence for organic carbon (OC). Comparable fossil source contributions to water-insoluble OC (WIOC; 55 +/- 3%) and to water-soluble OC (WSOC; 54 +/- 4%) highlight the importance of secondary aerosol formation, considering that fossil sources emit only small amounts of primary WSOC. OC concentrations increased during high PM2.5 pollution events, with increased fossil and non-fossil WSOC concentrating at larger particles (0.44-2.5 mu m) than WIOC (0.25-2.5 mu m), highlighting the aqueous-phase chemistry as an important pathway for OC production. The ratio of C-13/C-12 (expressed as delta C-13) of total carbon (-27.0 parts per thousand to -23.3 parts per thousand) fell in the range of anthropogenic aerosol, reflecting small biogenic influence. delta C-13 of OC increased with desorption temperature steps (200 degrees C, 350 degrees C and 650 degrees C). The strongly enriched delta C-13(OC, 650) (-26.9 parts per thousand to -20.3 parts per thousand) and large mass fraction of OC650 degrees C in total desorbed OC, both increasing with the increase of particle sizes, were caused by photochemical aging, especially during low and moderate PM2.5 pollution events, when regional, aged aerosol played an important role. During low pollution events, higher delta C-13(OC, 650) and WSOC/OC ratios reflect a larger contribution and more extensive chemical processing of aged aerosol. In contrast, relatively low delta C-13(OC, 200) (-27.2 parts per thousand to -25.7 parts per thousand) suggests the influence of secondary OC formation on the more volatile OC desorbed at 200 degrees C. delta(13)C(OC, 20)0 was similar for all particle sizes and for different pollution events, pointing to an internal mixture of local and aged regional OC. Our results show that the organic aerosol in Beijing arises from a mixture of various sources and complex formation processes, spanning local to regional scales. Particle sizes < 250 nm show strong contribution from local secondary OC formation, whereas refractory OC in particles around 1 mu m shows strong evidence for regional aging processes. In summary, primary emission, secondary and aqueous-phase formation, and (photo-) chemical aging all need to be considered to understand organic aerosol in this region and their importance varies with particle size.
KeywordSize-resolved aerosol PM2.5 pollution Dual-carbon isotopes Source apportionment Fossil source contribution Aqueous-phase chemistry
DOI10.1016/j.envint.2021.106890
WOS KeywordCARBON-ISOTOPE ; PARTICULATE MATTER ; SEVERE HAZE ; ATMOSPHERIC AEROSOLS ; SOURCE APPORTIONMENT ; ELEMENTAL CARBON ; BACKGROUND SITE ; FOSSIL SOURCES ; WINTER HAZE ; SECONDARY
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC0212701] ; National Natural Science Foundation of China[41925015] ; Chinese Academy of Sciences[ZDBS-LY-DQC001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; KNAW[530-5CDP30] ; Cross Innovative Team fund from the State Key Laboratory of Loess and Quaternary Geology[SKLLQGTD1801]
WOS Research AreaEnvironmental Sciences & Ecology
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences ; KNAW ; Cross Innovative Team fund from the State Key Laboratory of Loess and Quaternary Geology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000705024800001
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/17107
Collection粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
Corresponding AuthorHuang, Ru-Jin; Dusek, Ulrike
Affiliation1.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, State Key Lab Loess & Quaternary Geol, Key Lab Aerosol Chem & Phys,Inst Earth Environm, Xian 710061, Peoples R China
2.Univ Groningen, Energy & Sustainabil Res Inst Groningen ESRIG, Ctr Isotope Res CIO, NL-9747 AG Groningen, Netherlands
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ni, Haiyan,Huang, Ru-Jin,Yao, Peng,et al. Organic aerosol formation and aging processes in Beijing constrained by size-resolved measurements of radiocarbon and stable isotopic C-13[J]. ENVIRONMENT INTERNATIONAL,2022,158:10.
APA Ni, Haiyan.,Huang, Ru-Jin.,Yao, Peng.,Cosijn, Max M..,Kairys, Norbertas.,...&Dusek, Ulrike.(2022).Organic aerosol formation and aging processes in Beijing constrained by size-resolved measurements of radiocarbon and stable isotopic C-13.ENVIRONMENT INTERNATIONAL,158,10.
MLA Ni, Haiyan,et al."Organic aerosol formation and aging processes in Beijing constrained by size-resolved measurements of radiocarbon and stable isotopic C-13".ENVIRONMENT INTERNATIONAL 158(2022):10.
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