| Spatial distributions of airborne di-carbonyls in urban and rural areas in China | |
| Lui, K. H.1; Dai, Wen-Ting2,6; Chan, C. S.1; Ho, Steven Sai Hang2,3,6; Cao, Jun-Ji2,4; Lee, S. C.5; Ho, K. F.1,2 | |
| 2017-04-01 | |
| 发表期刊 | ATMOSPHERIC RESEARCH
 |
| 卷号 | 186期号:2017页码:1-8 |
| 文章类型 | Article |
| 摘要 | Gaseous glyoxal and methylglyoxal concentrations were characterized in nine cities of China during 2010-2011. The average summer (winter) glyoxal and methylglyoxal concentrations were 36.4-178.4 (12.3-241.4) and 67.8-359.4 (28.4-530.0) ng/m(3), respectively. In summer, the highest average glyoxal concentration was in Guangzhou (GZ), while the lowest was in Shanghai (SH). In winter, Xiamen (XM) showed the highest average methylglyoxal concentration and Yantai (YT) reported the lowest. Both di-carbonyls showed distinct seasonal variations. The maximum average methylglyoxal concentration was approximately twice as much as glyoxal, which is consistent with the results of other studies. Glyoxal-to-methylglyoxal ratios showed that there was a consistent direct source of emissions in remote areas such as Qinghai Lake and Lhasa in both seasons (r >= 0.9). Pearson's correlation analysis suggested possible similar sources formation (R >= 0.7) for the two di-carbonyls in winter. Multiple linear regression analyses demonstrated that every 1 degrees C temperature increase could lead to a > 2% increase in the concentration of the di-carbonyls in both seasons. There was a greater percentage gain for glyoxal in winter than in summer for the same temperature increase. The northeast monsoon occurs in winter, and for every 1 ms(-1) increase in wind speed, >20% of the di-carbonyls can be transferred out of China. This study is useful to understand about the secondary organic aerosol formation in the areas, the statistical analysis can provide information about the relationships between these carbonyls in atmosphere. (C) 2016 Elsevier B.V. All rights reserved. |
| 关键词 | Glyoxal Methylglyoxal Ambient Air Correlation Analysis Multiple Linear Regression |
| WOS标题词 | Science & Technology ; Physical Sciences |
| DOI | 10.1016/j.atmosres.2016.11.008 |
| 关键词[WOS] | SECONDARY ORGANIC AEROSOL ; ATMOSPHERIC OXALIC-ACID ; OH RADICAL OXIDATION ; NONMETHANE HYDROCARBONS ; SOURCE APPORTIONMENT ; PARTICULATE MATTER ; AQUEOUS-PHASE ; IN-VITRO ; P-XYLENE ; GLYOXAL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000392557700001 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5555 |
| 专题 | 粉尘与环境研究室 |
| 作者单位 | 1.Chinese Univ Hong Kong, Jockey Club Sch Publ Hlth & Primary Care, Hong Kong, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Earth Environment, SKLLQG, Key Lab Aerosol Chem & Phys, Xian 710075, Peoples R China 3.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA 4.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Peoples R China 5.Hong Kong Polytech Univ, Res Ctr Urban Environm Technol & Management, Dept Civil & Struct Engn, Hong Kong, Hong Kong, Peoples R China 6.Chinese Acad Sci, Inst Earth & Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lui, K. H.,Dai, Wen-Ting,Chan, C. S.,et al. Spatial distributions of airborne di-carbonyls in urban and rural areas in China[J]. ATMOSPHERIC RESEARCH,2017,186(2017):1-8. |
| APA | Lui, K. H..,Dai, Wen-Ting.,Chan, C. S..,Ho, Steven Sai Hang.,Cao, Jun-Ji.,...&Ho, K. F..(2017).Spatial distributions of airborne di-carbonyls in urban and rural areas in China.ATMOSPHERIC RESEARCH,186(2017),1-8. |
| MLA | Lui, K. H.,et al."Spatial distributions of airborne di-carbonyls in urban and rural areas in China".ATMOSPHERIC RESEARCH 186.2017(2017):1-8. |
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