Sources, compositions, and optical properties of humic-like substances in Beijing during the 2014 APEC summit: Results from dual carbon isotope and Fourier-transform ion cyclotron resonance mass spectrometry analyses | |
Mo, Yangzhi; Li, Jun; Jiang, Bin; Su, Tao; Geng, Xiaofei; Liu, Junwen; Jiang, Haoyu; Shen, Chengde; Ding, Ping; Zhong, Guangcai | |
刊名 | ENVIRONMENTAL POLLUTION |
2018-08 | |
卷号 | 239页码:322-331 |
关键词 | Asia-Pacific Economic Cooperation Brown carbon Carbon isotope Fourier-transform ion cyclotron resonance mass spectrometry Humic-like substances |
ISSN号 | 0269-7491 |
DOI | 10.1016/j.envpol.2018.04.041 |
产权排序 | [Mo, Yangzhi ; Li, Jun ; Jiang, Bin ; Su, Tao ; Geng, Xiaofei ; Liu, Junwen ; Jiang, Haoyu ; Zhong, Guangcai ; Cheng, Zhineng ; Liao, Yuhong ; Zhang, Gan] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China ; [Shen, Chengde ; Ding, Ping] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China ; [Tian, Chongguo] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Peoples R China ; [Chen, Yingjun] Tongji Univ, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China ; [Mo, Yangzhi ; Su, Tao ; Geng, Xiaofei ; Jiang, Haoyu] Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
文献子类 | Article |
英文摘要 | Humic-like substances (HULIS) are a class of high molecular weight, light-absorbing compounds that are highly related to brown carbon (BrC). In this study, the sources and compositions of HULIS isolated from fine particles collected in Beijing, China during the 2014 Asia-Pacific Economic Cooperation (APEC) summit were characterized based on carbon isotope (C-13 and C-14) and Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR MS) analyses, respectively. HULIS were the main light-absorbing components of water-soluble organic carbon (WSOC), accounting for 80.2 +/- 6.1% of the WSOC absorption capacity at 365 nm. The carbon isotope data showed that HULIS had a lower non-fossil contribution (53 +/- 4%) and were less enriched with C-13 (-24.2 +/- 0.6 parts per thousand) relative to non-HULIS (62 +/- 8% and-20.8 +/- 03 parts per thousand, respectively). The higher relative intensity fraction of sulfur-containing compounds in HULIS before and after APEC was attributed to higher sulfur dioxide levels emitted from fossil fuel combustion, whereas the higher fraction of nitrogen-containing compounds during APEC may have been due to the relatively greater contribution of non-fossil compounds or the influence of nitrate radical chemistry. The results of investigating the relationships among the sources, elemental compositions, and optical properties of HULIS demonstrated that the light absorption of HULIS appeared to increase with increasing unsaturation degree, but decrease with increasing oxidation level. The unsaturation of HULIS was affected by both sources and aging level. (C) 2018 Elsevier Ltd. All rights reserved. |
WOS关键词 | SOLUBLE ORGANIC-CARBON ; BIOMASS-BURNING AEROSOLS ; ATMOSPHERIC BROWN CARBON ; PEARL RIVER DELTA ; LIGHT-ABSORPTION CHARACTERISTICS ; SOUTHEASTERN UNITED-STATES ; SOURCE APPORTIONMENT ; MOLECULAR CHARACTERIZATION ; BLACK CARBON ; SEASONAL-VARIATIONS |
WOS研究方向 | Environmental Sciences |
语种 | 英语 |
WOS记录号 | WOS:000434744800032 |
资助机构 | Natural Science Foundation of China (NSFC) [41430645, 41773120] ; Guangzhou Science and Technology Program key projects [201504010002] ; Chinese Academy of Sciences [XDB05040503] |
内容类型 | 期刊论文 |
源URL | [http://ir.yic.ac.cn/handle/133337/24431] |
专题 | 烟台海岸带研究所_近岸生态与环境实验室 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai 264003, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Tongji Univ, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China; 4.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Guangdong, Peoples R China; 5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China; |
推荐引用方式 GB/T 7714 | Mo, Yangzhi,Li, Jun,Jiang, Bin,et al. Sources, compositions, and optical properties of humic-like substances in Beijing during the 2014 APEC summit: Results from dual carbon isotope and Fourier-transform ion cyclotron resonance mass spectrometry analyses[J]. ENVIRONMENTAL POLLUTION,2018,239:322-331. |
APA | Mo, Yangzhi.,Li, Jun.,Jiang, Bin.,Su, Tao.,Geng, Xiaofei.,...&Zhang, Gan.(2018).Sources, compositions, and optical properties of humic-like substances in Beijing during the 2014 APEC summit: Results from dual carbon isotope and Fourier-transform ion cyclotron resonance mass spectrometry analyses.ENVIRONMENTAL POLLUTION,239,322-331. |
MLA | Mo, Yangzhi,et al."Sources, compositions, and optical properties of humic-like substances in Beijing during the 2014 APEC summit: Results from dual carbon isotope and Fourier-transform ion cyclotron resonance mass spectrometry analyses".ENVIRONMENTAL POLLUTION 239(2018):322-331. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论