中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 重庆绿色智能技术研究院
  3. 中国科学院重庆绿色智能技术研究院
  4. 大气环境研究中心
Atmospheric Processing of Loess Particles in a Polluted Urban Area of Northwestern China

文献类型：期刊论文

作者Chen, Yang5,6,7; Liu, Huanwu4; Huang, Ru-Jin6,7; Yang, Fumo3; Tian, Mi5; Yao, Xiaojiang5; Shen, Zhenxing2; Yan, Lulu1; Cao, Junji6,7
刊名JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
出版日期2019-07-27
卷号124期号:14页码:7919-7929
关键词dust processing single particle urban aging loess
ISSN号2169-897X
DOI10.1029/2018JD029956
通讯作者Yang, Fumo() ; Cao, Junji(cao@loess.llqg.ac.cn)
英文摘要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.
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
语种英语
WOS记录号WOS:000481444200027
出版者AMER GEOPHYSICAL UNION
源URL[http://119.78.100.138/handle/2HOD01W0/9560]  
专题大气环境研究中心
通讯作者Yang, Fumo; Cao, Junji
作者单位1.Xian Univ Architecture & Technol, Dept Environm & Municipal Engn, Xian, Shaanxi, Peoples R China
2.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian, Shaanxi, Peoples R China
3.Sichuan Univ, Natl Engn Res Ctr Flue Gas Desulfurizat, Sch Architecture & Environm, Chengdu, Sichuan, Peoples R China
4.Xian Environm Monitor Stn, Xian, Shaanxi, Peoples R China
5.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China
6.Chinese Acad Sci, Inst Earth Environm, KLACP, Xian, Shaanxi, Peoples R China
7.Chinese Acad Sci, Inst Earth Environm, SKLLQG, 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.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。