| Identification of chemical compositions and sources of atmospheric aerosols in Xi'an, inland China during two types of haze events | |
| Li, Jianjun1,2; Wang, Gehui1,2,3,4; Ren, Yanqin1,5; Wang, Jiayuan1,5; Wu, Can1,5; Han, Yanni1,5; Zhang, Lu1,5; Cheng, Chunlei1,5; Meng, Jingjing1,5 | |
| 2016-10-01 | |
| 发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 卷号 | 566期号:2016页码:230-237 |
| 文章类型 | Article |
| 摘要 | High time resolution (1 h) of TSP filter samples was collected in Xi'an in inland China from December 5 to 13, 2012, during which a 9-day long of haze episode occurred. The hazy days were classified as two types, i.e., Light-haze period with moderate degradation in visibility (5-10 km) and relatively dry conditions (RH: 53 +/- 19%) and Severe-haze period with a daily visibility less than 5 km and humid conditions (RH: 73 +/- 14%). TSP in the two periods (415 +/- 205 and 530 +/- 180 mu g m(-3) in Light-haze and Severe-haze periods, respectively) was comparable, but crustal Fe and Ca elements presented higher concentrations and strong correlation (R-2 = 0.72) with TSP in Light-haze period. SO42-, NO3- and NH4+ in Light-haze period were 16 +/- 5.9, 12 +/- 6.7 and 4.1 +/- 2.8 mu gm(-3), respectively, and increased dramatically to 51 +/- 15, 44 +/- 9.7 and 23 +/- 5.6 mu gm(-3) in Severe-haze period. Contributions of Fe and Ca to TSP decreased from 9.2% in Light-haze period to 5.3% in Severehaze period, but those of SO42-, NO3- and NH4+ increased from 3.8%, 2.9% and 1.0% in Light-haze period to 9.6%, 8.3% and 4.4% in Severe-haze period, respectively. These results suggest that dust-derived particles were more significant in Light-haze period while secondary aerosols were more important in Severe-haze period. Hopanes (33 +/- 24 and 38 +/- 29 ngm(-3) in Light-haze and Severe-haze periods, respectively) during the two types of haze periods are comparable, indicating that differences in contribution of primary organic aerosols from fossil fuel combustions to TSP were insignificant. In contrast, the ratio of secondary organic aerosols (e.g., o-phthalic acid) to EC was much higher in Severe-haze period (5.8 +/- 2.7 ng mu g(-1)) than in Light-haze period (3.4 +/- 2.1 ng mu g(-1)), probably indicating that the humid conditions in Severe-haze period are favorable for secondary organic aerosol formation. (C) 2016 Elsevier B.V. All rights reserved. |
| 关键词 | Tsp And Haze Relative Humidity Primary And Secondary Organic Aerosols Sulfate Nitrate And Dust |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| DOI | 10.1016/j.scitotenv.2016.05.057 |
| 关键词[WOS] | POLYCYCLIC AROMATIC-HYDROCARBONS ; SECONDARY ORGANIC AEROSOL ; FINE PARTICULATE MATTER ; DICARBOXYLIC-ACIDS ; ISOTOPIC COMPOSITIONS ; KETOCARBOXYLIC ACIDS ; SOURCE APPORTIONMENT ; FORMATION MECHANISM ; SEASONAL-CHANGES ; LOESS PLATEAU |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:000381060900026 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5704 |
| 专题 | 粉尘与环境研究室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710079, Peoples R China 4.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jianjun,Wang, Gehui,Ren, Yanqin,et al. Identification of chemical compositions and sources of atmospheric aerosols in Xi'an, inland China during two types of haze events[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2016,566(2016):230-237. |
| APA | Li, Jianjun.,Wang, Gehui.,Ren, Yanqin.,Wang, Jiayuan.,Wu, Can.,...&Meng, Jingjing.(2016).Identification of chemical compositions and sources of atmospheric aerosols in Xi'an, inland China during two types of haze events.SCIENCE OF THE TOTAL ENVIRONMENT,566(2016),230-237. |
| MLA | Li, Jianjun,et al."Identification of chemical compositions and sources of atmospheric aerosols in Xi'an, inland China during two types of haze events".SCIENCE OF THE TOTAL ENVIRONMENT 566.2016(2016):230-237. |
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