Characteristics of size distributions and sources of water-soluble ions in Lhasa during monsoon and non-monsoon seasons
文献类型：期刊论文
| 作者 | Wei, NN; Xu, ZY; Liu, JW; Wang, GH; Liu, W; Zhuoga, DQ; Xiao, DT; Yao, J |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2019 |
| 卷号 | 82期号:-页码:155—168 |
| 关键词 | CHEMICAL-COMPOSITION AEROSOL-PARTICLES ATMOSPHERIC AEROSOL TIBETAN PLATEAU URBAN SITE MULTIVARIATE-ANALYSIS TRACE-ELEMENTS INORGANIC-IONS PM2.5 CITY |
| ISSN号 | 1001-0742 |
| DOI | 10.1016/j.jes.2019.02.017 |
| 文献子类 | 期刊论文 |
| 英文摘要 | To understand the physical and chemical characteristics, particle size distribution and sources of size-separated aerosols in Lhasa, which is located on the Tibetan Plateau (TP), six sizes of aerosol samples were collected in Lhasa in 2014. Ca2+, NH4+, NO3-, SO42- and Cl- were the dominant ions. The ratio of cation equivalents (CE) to anion equivalents (AE) for each particle size segment indicated that the atmospheric aerosols in Lhasa were alkaline. SO42- and NO3- could be neutralized by Ca2+, but could not be neutralized by NH4+, according to the [NH4+]/[NO3- + SO42-] and [Ca2+]/[NO3- + SO42-] ratios. Mobile sources were dominant in PM0.95-1.5, PM1.5-3 and PM3-7.2, while stationary sources were dominant in the other three size fractions according to the [NO3-]/[SO42-] ratios. The particle size distribution of all water-soluble ions during monsoon and non-monsoon periods was characterized by a bimodal distribution due to the different sources and formation mechanisms, and it was revealed that different ions had different sources in different seasons and different particle size segments by combining particle size distribution with correlation analysis. Source analysis of aerosols in Lhasa was performed using the Principal component analysis (PCA) for the first time, which revealed that combustion sources, motor vehicle exhaust, photochemical reaction sources and various types of dust were the main sources of Lhasa aerosols. Furthermore, Lhasa's air quality was also affected by long-distance transmission, expressed as pollutants from South Asia and West Asia, which were transmitted to Lhasa according to backward trajectory analysis. (c) 2019 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31503]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China; 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Dept Nucl Reactor Engn, Shanghai 201800, Peoples R China; 3.Jinan Univ, Inst Environm & Climate Res, Guangzhou 510632, Guangdong, Peoples R China; 4.Meteorol Serv Ctr Tibet Autonomous Reg Meteorol, Lhasa 850000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, NN,Xu, ZY,Liu, JW,et al. Characteristics of size distributions and sources of water-soluble ions in Lhasa during monsoon and non-monsoon seasons[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2019,82(-):155—168. |
| APA | Wei, NN.,Xu, ZY.,Liu, JW.,Wang, GH.,Liu, W.,...&Yao, J.(2019).Characteristics of size distributions and sources of water-soluble ions in Lhasa during monsoon and non-monsoon seasons.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,82(-),155—168. |
| MLA | Wei, NN,et al."Characteristics of size distributions and sources of water-soluble ions in Lhasa during monsoon and non-monsoon seasons".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 82.-(2019):155—168. |
入库方式： OAI收割
来源：上海应用物理研究所
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。