Knowledge Management System Of Institute of Earth Environment, CAS
| Seasonal behavior of carbonyls and source characterization of formaldehyde (HCHO) in ambient air | |
| Lui, K. H.1; Ho, Steven Sai Hang2,3; Louie, Peter K. K.4; Chan, C. S.1; Lee, S. C.5; Hu, Di6; Chan, P. W.7; Lee, Jeffrey Chi Wai7; Ho, K. F.1 | |
| 2017-03-01 | |
| 发表期刊 | ATMOSPHERIC ENVIRONMENT
 |
| 卷号 | 152期号:2017页码:51-60 |
| 文章类型 | Article |
| 摘要 | Gas-phase formaldehyde (HCHO) is an intermediate and a sensitive indicator for volatile organic compounds (VOCs) oxidation, which drives tropospheric ozone production. Effective photochemical pollution control strategies demand a thorough understanding of photochemical oxidation precursors, making differentiation between sources of primary and secondary generated HCHO inevitable. Spatial and seasonal variations of airborne carbonyls based on two years of measurements (2012-2013), coupled with a correlation-based HCHO source apportionment analysis, were determined for three sampling locations in Hong Kong (denoted HT, TC, and YL). Formaldehyde and acetaldehyde were the two most abundant compounds of the total quantified carbonyls. Pearson's correlation analysis (r > 0.7) implies that formaldehyde and acetaldehyde possibly share similar sources. The total carbonyl concentration trends (HT < TC < YL) reflect location characteristics (urban > rural). A regression analysis further quantifies the relative primary HCHO source contributions at HT (similar to 13%), TC (similar to 21%), and YL (similar to 40%), showing more direct vehicular emissions in urban than rural areas. Relative secondary source contributions at YL (similar to 36%) and TC (similar to 31%) resemble each other, implying similar urban source contributions. Relative background source contributions at TC could be due to a closed structure microenvironment that favors the trapping of HCHO. Comparable seasonal differences are observed at all stations. The results of this study will aid in the development of a new regional ozone (O-3) control policy, as ambient HCHO can enhance O-3 production and also be produced from atmospheric VOCs oxidation (secondary HCHO). (C) 2016 Elsevier Ltd. All rights reserved. |
| 关键词 | Carbonyl Seasonal Variation Source Apportionment Analysis Ambient Air Correlation Analysis |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| DOI | 10.1016/j.atmosenv.2016.12.004 |
| 关键词[WOS] | HONG-KONG ; STATISTICAL-ANALYSIS ; VEHICLE EMISSIONS ; URBAN ; ENVIRONMENT ; ROADSIDE ; HOUSTON ; ACETALDEHYDE ; TROPOSPHERE ; ATMOSPHERE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000394400000006 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5505 |
| 专题 | 黄土与第四纪地质国家重点实验室（2010~） |
| 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, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710075, Peoples R China 3.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA 4.Hong Kong Environm Protect Dept, 33-F,Revenue Tower,5 Gloucester Rd, Wan Chai, Hong Kong, Peoples R China 5.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Res Ctr Urban Environm Technol & Management, Hong Kong, Hong Kong, Peoples R China 6.Hong Kong Baptist Univ, Dept Chem, Kowloon, Hong Kong, Peoples R China 7.Hong Kong Observ, 134A Nathan Rd, Kowloon, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lui, K. H.,Ho, Steven Sai Hang,Louie, Peter K. K.,et al. Seasonal behavior of carbonyls and source characterization of formaldehyde (HCHO) in ambient air[J]. ATMOSPHERIC ENVIRONMENT,2017,152(2017):51-60. |
| APA | Lui, K. H..,Ho, Steven Sai Hang.,Louie, Peter K. K..,Chan, C. S..,Lee, S. C..,...&Ho, K. F..(2017).Seasonal behavior of carbonyls and source characterization of formaldehyde (HCHO) in ambient air.ATMOSPHERIC ENVIRONMENT,152(2017),51-60. |
| MLA | Lui, K. H.,et al."Seasonal behavior of carbonyls and source characterization of formaldehyde (HCHO) in ambient air".ATMOSPHERIC ENVIRONMENT 152.2017(2017):51-60. |
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| Seasonal behavior of（630KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
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