Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China

doi:10.1029/2018JD029956

IEECAS OpenIR > 粉尘与环境研究室

	Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China
	Chen, Yang 1,2,3; Liu, Huanwu 4; Huang, Ru-Jin 1,2; Yang, Fumo 5; Tian, Mi 3; Yao, Xiaojiang 3; Shen, Zhenxing 6; Yan, Lulu 7; Cao, Junji 1,2
通讯作者	Yang, Fumo() ; Cao, Junji(cao@loess.llqg.ac.cn)
	2019-07-27
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
卷号	124 期号:14 页码:7919-7929
摘要	Loess 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.
关键词	dust processing single particle urban aging loess
DOI	10.1029/2018JD029956
关键词[WOS]	SECONDARY ORGANIC AEROSOL ; MIXING STATE ; MINERAL DUST ; CHEMICAL-CHARACTERIZATION ; HETEROGENEOUS CHEMISTRY ; INDIVIDUAL PARTICLES ; MASS SPECTROMETERS ; SINGLE PARTICLES ; WATER-ADSORPTION ; GUANZHONG BASIN
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41703136] ; National Key Research and Development Program of China[2016YFC0200405]
WOS研究方向	Meteorology & Atmospheric Sciences
项目资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000481444200027
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/13627
专题	粉尘与环境研究室
通讯作者	Yang, Fumo; Cao, Junji
作者单位	1.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
推荐引用方式 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.