Water-Soluble Ionic Composition of Aerosols at Urban Location in the Foothills of Himalaya, Pokhara Valley, Nepal
文献类型：期刊论文
| 作者 | Kang, SC; Tripathee, L (Tripathee, Lekhendra)1,3,5; Kang, SC (Kang, Shichang)4,5; Rupakheti, D (Rupakheti, Dipesh)2; Zhang, QG (Zhang, Qianggong)2,4; Huang, J (Huang, Jie)2; Sillanpaa, M (Sillanpaa, Mika)3 |
| 刊名 | ATMOSPHERE
 |
| 出版日期 | 2016 |
| 卷号 | 7期号:8页码:102 |
| 关键词 | Chemical-composition Seasonal-variations Atmospheric Aerosol Inorganic-ions Mineral Dust Ambient Air Plateau Precipitation Particles China |
| DOI | 10.3390/atmos7080102 |
| 文献子类 | Article |
| 英文摘要 | The total suspended particulate (TSP) samples were collected from April 2013 to April 2014 at the urban location of Pokhara valley in western Nepal. The major aims were to study, quantify, and understand the concentrations and variations of TSP and major water-soluble inorganic ions (WSIIs) in the valley with limited data. The annual average TSP mass concentration was 135.50 +/- 62.91 mu g/m(3). The average analyzed total WSIIs accounted for 14.4% of total TSP mass. Major anions and cations in TSP samples were SO42- and Ca2+, respectively. Seasonal differences in atmospheric conditions explain the clear seasonal variations of ions, with higher concentrations during pre-monsoon and winter and lower concentrations during the monsoon period. Neutralization factor calculations suggested that Ca2+ in the Pokhara valley mostly neutralizes the acidity in the atmosphere. Principle component analysis, NO3- / SO42- ratio, and non-sea salt fraction calculations suggested that the WSIIs in the valley were mostly derived from anthropogenic activities and crustal mineral dust, which was also supported by the results from precipitation chemistry over the central Himalayas, Nepal. In addition, back trajectories analysis has suggested that the air pollution transported from and through Indo-Gangetic Plains (IGP) during the dry periods, which has resulted in high ionic loadings during this period. Average NO3- / SO42- ratio was found to be 0.69, indicating the dominance of stationary sources of TSP in Pokhara valley. Secondary inorganic aerosols can have an adverse health impact on the human population in the valley. The data set from this one-year study provides new insights into the composition of WSIIs in the foothills of the Himalayas, which can be of great importance for understanding the atmospheric environment in the region. |
| 学科主题 | 自然地理学 |
| 语种 | 英语 |
| WOS记录号 | WOS:000382476600007 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/7644]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Kang, SC |
| 作者单位 | 1.HERI, Kathmandu 44602, Nepal 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China 3.Lappeenranta Univ Technol, Lab Green Chem, FI-50130 Mikkeli, Finland 4.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 5.Chinese Acad Sci, State Key Lab Cryospher Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kang, SC,Tripathee, L ,Kang, SC ,et al. Water-Soluble Ionic Composition of Aerosols at Urban Location in the Foothills of Himalaya, Pokhara Valley, Nepal[J]. ATMOSPHERE,2016,7(8):102. |
| APA | Kang, SC.,Tripathee, L .,Kang, SC .,Rupakheti, D .,Zhang, QG .,...&Sillanpaa, M .(2016).Water-Soluble Ionic Composition of Aerosols at Urban Location in the Foothills of Himalaya, Pokhara Valley, Nepal.ATMOSPHERE,7(8),102. |
| MLA | Kang, SC,et al."Water-Soluble Ionic Composition of Aerosols at Urban Location in the Foothills of Himalaya, Pokhara Valley, Nepal".ATMOSPHERE 7.8(2016):102. |
入库方式： OAI收割
来源：青藏高原研究所
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