Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.atmosenv.2007.11.008 |
Seasonal chemical composition variations of wet deposition in Urumchi, Northwestern China | |
Xu, Ming1; Lue, Aihua2; Xu, Feng2; Wang, Bin1 | |
通讯作者 | Wang, Bin |
来源期刊 | ATMOSPHERIC ENVIRONMENT
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ISSN | 1352-2310 |
出版年 | 2008 |
卷号 | 42期号:5页码:1042-1048 |
英文摘要 | Urumchi suffered serious air quality problem in recent years. Although the main air pollutants and wet deposition monitoring have been undertaken by Urumchi Environmental Monitoring Center for many years, researches on chemical composition and variations of wet deposition were not there till now. In this paper, wet deposition monitoring data in Urumchi from 2000 and 2005 were selected to perform this evaluation based on data quality and data integrity. The mean (VWM) concentrations of parameters of wet deposition, namely pH, conductivity, 4, N03, (2+), Mg2+ F-_, Cl-_, NH4+,Ca2+, Na+ and K+ concentrations, were 6.86 and 91.04 mu s cm(-1), 14.3, 1.63, 0.37, 3.78, 1.22, 4.79, 0.59, 1.05, 0.74mg L-1, respectively. Acid precipitation appeared only in wintertime in few cases, and its extreme value was 4.96; the maximum emerged during sand storm event in the non-winter season with the value of 9.35. Wet deposition and air pollution characteristics varied with seasons. In order to make a certainty of possible sources of ions in different seasons, principal component analysis was applied, and conclusions were drawn that in wintertime, the predominant contributor to the wet deposition was coal combustion for residential heating; however, in the non-winter season, the situation was more complicated, dust and soil from outside the urban, dust re-suspension, local industries process, motor vehicle emissions all played their roles. (c) 2007 Elsevier Ltd. All rights reserved. |
英文关键词 | arid area sand-dust emission variation contribution principal component analysis |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000253851500020 |
WOS关键词 | REGIONAL CHARACTERISTICS ; DUST STORMS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/156558 |
作者单位 | 1.Sichuan Univ, Dept Environm Sci & Engn, Chengdu 610065, Sichuan, Peoples R China; 2.Urumchi Environm Monitoring Ctr, Urumqi 830000, Xinjiang Uigur, Peoples R China |
推荐引用方式 GB/T 7714 | Xu, Ming,Lue, Aihua,Xu, Feng,et al. Seasonal chemical composition variations of wet deposition in Urumchi, Northwestern China[J],2008,42(5):1042-1048. |
APA | Xu, Ming,Lue, Aihua,Xu, Feng,&Wang, Bin.(2008).Seasonal chemical composition variations of wet deposition in Urumchi, Northwestern China.ATMOSPHERIC ENVIRONMENT,42(5),1042-1048. |
MLA | Xu, Ming,et al."Seasonal chemical composition variations of wet deposition in Urumchi, Northwestern China".ATMOSPHERIC ENVIRONMENT 42.5(2008):1042-1048. |
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