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Efficient Heterogeneous Formation of Ammonium Nitrate on the Saline Mineral Particle Surface in the Atmosphere of East Asia during Dust Storm Periods
Wu, Can1,2; Zhang, Si1; Wang, Gehui1,2,5; Lv, Shaojun1; Li, Dapeng1; Liu, Lang2; Li, Jianjun2; Liu, Shijie1; Du, Wei1; Meng, Jingjing3; Qiao, Liping4; Zhou, Min4; Huang, Cheng4; Wang, Hongli4
Corresponding AuthorWang, Gehui(ghwang@geo.ecnu.edu.cn)
2020-12-15
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume54Issue:24Pages:15622-15630
AbstractTo understand the chemical evolution of dust in the current East Asian atmosphere, the chemistry of PM2.5 and size-resolved aerosols in Shanghai, China, during the 2019 dust storm event was investigated. Our results showed that concentrations of SO42- in the city during the event highly correlated with Ca2+ and Na+ due to the direct emissions of CaSO4 and Na2SO4 from the upwind deserts. In contrast, during the event, NO3- linearly correlated with NH4+ at a molar ratio close to 1:1, and both almost entirely stayed in coarse particles, suggesting they accumulated on the dust surface as NH4NO3. Based on the field observations and laboratory smog chamber simulations, we found that NO2 and O-3 in Shanghai during the dust period reacted to form N2O5, which subsequently hydrolyzed into HNO3 on the surface of saline mineral dusts (e.g., CaSO4 and Na2SO4) and was further neutralized by NH3 as NH4NO3. The relative abundances of NO3- and NH4+ in Shanghai during the dust event were notably higher than those a decade ago, indicating that this heterogeneous formation of NH4NO3 on dust was enhanced by the abundantly coexisting NOx, O-3, and NH3 in the current East Asian atmosphere, which should be considered in future modeling studies.
DOI10.1021/acs.est.0c04544
WOS KeywordINLAND CHINA ; DESERT DUST ; AEROSOL CHEMISTRY ; MIXING STATE ; TRANSPORT ; SULFATE ; EVENTS ; XIAN ; HYGROSCOPICITY ; DEPOSITION
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Key R&D Plan, Ministry of Science and Technology of China (Mechanism and chemical process characterization of atmospheric particulate matter multi-isotope fractionation)[2017YFC0212703] ; National Natural Science Foundation of China[41773117] ; Institute of EcoChongming ; ECNU Happiness Flower Plan
WOS Research AreaEngineering ; Environmental Sciences & Ecology
Funding OrganizationNational Key R&D Plan, Ministry of Science and Technology of China (Mechanism and chemical process characterization of atmospheric particulate matter multi-isotope fractionation) ; National Natural Science Foundation of China ; Institute of EcoChongming ; ECNU Happiness Flower Plan
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000600100400007
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/15797
Collection粉尘与环境研究室
Corresponding AuthorWang, Gehui
Affiliation1.East China Normal Univ, Sch Geog Sci, Key Lab Geog Informat Sci, Minist Educ, Shanghai 210062, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
3.Liaocheng Univ, Sch Environm & Planning, Liaocheng 252000, Shandong, Peoples R China
4.Shanghai Acad Environm Sci, State Environm Protect Key Lab Format & Prevent U, Shanghai 200233, Peoples R China
5.Inst Ecochongming, Shanghai 200062, Peoples R China
Recommended Citation
GB/T 7714
Wu, Can,Zhang, Si,Wang, Gehui,et al. Efficient Heterogeneous Formation of Ammonium Nitrate on the Saline Mineral Particle Surface in the Atmosphere of East Asia during Dust Storm Periods[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2020,54(24):15622-15630.
APA Wu, Can.,Zhang, Si.,Wang, Gehui.,Lv, Shaojun.,Li, Dapeng.,...&Wang, Hongli.(2020).Efficient Heterogeneous Formation of Ammonium Nitrate on the Saline Mineral Particle Surface in the Atmosphere of East Asia during Dust Storm Periods.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(24),15622-15630.
MLA Wu, Can,et al."Efficient Heterogeneous Formation of Ammonium Nitrate on the Saline Mineral Particle Surface in the Atmosphere of East Asia during Dust Storm Periods".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.24(2020):15622-15630.
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