IEECAS OpenIR  > 粉尘与环境研究室
Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China
Chen, Yang1,2,3; Liu, Huanwu4; Huang, Ru-Jin1,2; Yang, Fumo5; Tian, Mi3; Yao, Xiaojiang3; Shen, Zhenxing6; Yan, Lulu7; Cao, Junji1,2
Corresponding AuthorYang, Fumo() ; Cao, Junji(cao@loess.llqg.ac.cn)
2019-07-27
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
Volume124Issue:14Pages:7919-7929
AbstractLoess is an important dust component of airborne particles in Northwestern China. Knowledge of the chemical composition, mixing state, and processing of loess particles in urban plumes is still limited. Urban loess particles were characterized using a single-particle aerosol mass spectrometer. To understand sources and processing of loess particles, source samples from the road, urban background, soil, construction, and biomass burning ash were collected in the urban areas and characterized. Loess particles were determined as a kind of calcium-silicate-rich ones, which were internally mixed with calcium, silicates, potassium, elemental carbon, organics, ammonium, sulfate, and nitrate. Road and soil were major sources of loess particles. Among the aged loess particles, the average peak areas of taken-up nitrate and sulfate were comparable to that of (Fe+Ca+Al). Diurnal uptake profiles of chloride, sulfate, oxalate, and nitrate on loess particles were analyzed. The nocturnal elevation of chloride occurred significantly due to the uptake of HCl (g). Nighttime nitrate formation occurred prevalently under high relative humidity conditions via the heterogeneous hydrolysis of N2O5. The nighttime enrichment of oxalate, which is a marker for aqueous-formatted secondary organic aerosol, was also found. Besides the nighttime chemistry, the daytime photochemical activities were also a drive for the elevations of sulfate, nitrate, and ammonium. Conclusively, the processing of loess particles in polluted urban plumes significantly altered their chemical composition and mixing state.
Keyworddust processing single particle urban aging loess
DOI10.1029/2018JD029956
WOS KeywordSECONDARY ORGANIC AEROSOL ; MIXING STATE ; MINERAL DUST ; CHEMICAL-CHARACTERIZATION ; HETEROGENEOUS CHEMISTRY ; INDIVIDUAL PARTICLES ; MASS SPECTROMETERS ; SINGLE PARTICLES ; WATER-ADSORPTION ; GUANZHONG BASIN
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41703136] ; National Key Research and Development Program of China[2016YFC0200405]
WOS Research AreaMeteorology & Atmospheric Sciences
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000481444200027
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/13627
Collection粉尘与环境研究室
Corresponding AuthorYang, Fumo; Cao, Junji
Affiliation1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, KLACP, Xian, Shaanxi, Peoples R China
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China
4.Xian Environm Monitor Stn, Xian, Shaanxi, Peoples R China
5.Sichuan Univ, Natl Engn Res Ctr Flue Gas Desulfurizat, Sch Architecture & Environm, Chengdu, Sichuan, Peoples R China
6.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian, Shaanxi, Peoples R China
7.Xian Univ Architecture & Technol, Dept Environm & Municipal Engn, Xian, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Chen, Yang,Liu, Huanwu,Huang, Ru-Jin,et al. Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(14):7919-7929.
APA Chen, Yang.,Liu, Huanwu.,Huang, Ru-Jin.,Yang, Fumo.,Tian, Mi.,...&Cao, Junji.(2019).Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(14),7919-7929.
MLA Chen, Yang,et al."Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.14(2019):7919-7929.
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