CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Temporal variations and source apportionment of Hulis-C in PM2.5 in urban Shanghai
Zhao, MF; Qiao, T; Li, YL; Tang, XX; Xiu, GL; Yu, JZ; Xiu, GL (reprint author), East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China.
2016
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume571Pages:18-26
Subtype期刊论文
AbstractHumic-like substances (Hulis), the hydrophobic part of water-soluble organic compounds, have been recognized to play important roles in environmental behavior of PM2..5 in atmosphere. In this study, Hulis and other components of PM2.5, collected in urban Shanghai from September 2013 to August 2014 were analyzed. The annual average concentration of Hulis carbon (Hulis-C) was (2.61 +/- 2.58) mu g/m(3), accounting for about 50% of water-soluble organic carbon (WSOC). The monthly average Hulis-C concentration peaked in December while the lowest was in summer, coinciding with the high and low of levoglucosan and secondary inorganic aerosol (SIA). Biomass burning and secondary formation Were both important sources of Hulis-C, and their contributions showed obvious seasonality. In late autumn and winter, the strong inter-correlations among Hulis-C concentrations, NO3-/SO4- mass ratios and nitrogen oxidation ratios (NOR) were found, suggesting the atmospheric oxidation of NOx to nitrate and related gas-phase reactions may be inter-linked with Hulis-C formation. In summer, photochemical reaction was clearly the major source of Hulis-C. The investigation by backward trajectory analysis showed that the long-range transport from the Northwest brought large amounts of PM2.5 and enhanced Hulis-C and levoglucosan level, indicating biomass burning as a significant source of Hulis-C under this type of synoptic weather conditions. In comparison, Hulis formation associated with the NOx oxidation pathway was mainly associated with the short-range transport from the neighboring cities. Marine aerosol was relatively clean and had little effects on Hulis-C. The CWT (concentration weighted trajectory) model results suggested that the Yangtze River Delta (YRD) region was an important source region of Hulis-C, while the effect of some northwestern areas was not negligible. (C) 2016 Elsevier B.V. All rights reserved.
KeywordHulis-c Temporal Variations Source Identification Source Regions
DOI10.1016/j.scitotenv.2016.07.127
Indexed BySCI
Language英语
WOS IDWOS:000383930400003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/26649
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorXiu, GL (reprint author), East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China.
Recommended Citation
GB/T 7714
Zhao, MF,Qiao, T,Li, YL,et al. Temporal variations and source apportionment of Hulis-C in PM2.5 in urban Shanghai[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,571:18-26.
APA Zhao, MF.,Qiao, T.,Li, YL.,Tang, XX.,Xiu, GL.,...&Xiu, GL .(2016).Temporal variations and source apportionment of Hulis-C in PM2.5 in urban Shanghai.SCIENCE OF THE TOTAL ENVIRONMENT,571,18-26.
MLA Zhao, MF,et al."Temporal variations and source apportionment of Hulis-C in PM2.5 in urban Shanghai".SCIENCE OF THE TOTAL ENVIRONMENT 571(2016):18-26.
Files in This Item:
File Name/Size DocType Version Access License
Temporal variations (1286KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhao, MF]'s Articles
[Qiao, T]'s Articles
[Li, YL]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhao, MF]'s Articles
[Qiao, T]'s Articles
[Li, YL]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhao, MF]'s Articles
[Qiao, T]'s Articles
[Li, YL]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Temporal variations and source apportionment of Hulis-C in PM2.5 in urban Shanghai.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.