Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2019.104691 |
Measurement of mercury, other trace elements and major ions in wet deposition at Jomsom: The semi-arid mountain valley of the Central Himalaya | |
Tripathee, Lekhendra1,4; Guo, Junming1; Kang, Shichang1,2,5; Paudyal, Rukumesh1,4,5; Sharma, Chhatra Mani4,6; Huang, Jie2,3; Chen, Pengfei1; Ghimire, Prakriti Sharma1,4; Sigdel, Madan7; Sillanpaa, Mika8 | |
2020-04-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2020 |
卷号 | 234 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Nepal; Finland |
英文摘要 | South Asian pollutants can be transported and deposited via wet/dry deposition to the remote areas of the Himalayas and could pose a serious threat to the mountain ecosystems. Therefore, in order to understand the concentrations, fluxes, seasonal variation and origin of the mercury (Hg), major ions and trace elements, precipitation samples were collected during 2012-2013 from a data gap region, Jomsom, the high elevation semiarid mountain valley in the central Himalayas. The volume-weighted mean (VWM) concentrations of ions followed the order of Ca2+ > Mg2+ > Na+ > NH4+ > SO42- > Cl- > NO3- > K+. The concentration of Cd was lowest (0.07 mu g L-1) whereas that of Fe was the highest (1073.59 mu g L-1) in the precipitation samples. Wet deposition level of all the measured inorganic species was comparable to urban Lhasa but higher than those in remote alpine sites of the Tibetan Plateau (TP). This study shows that Hg and other inorganic constituents were higher in the non-monsoon season compared to monsoon due to enhanced washout of aerosols. Enrichment factor (EF), sea salt fraction, crustal and anthropogenic fractions, principal component analysis (PCA) and correlation coefficient analysis suggested that crustal dust and anthropogenic activities as the major sources of measured chemical species whereas the influence of sea-salt was minimal. In addition, local anthropogenic emissions were low suggesting that the majority of the pollutants could have been transported from the South Asian region to the high elevation mountains. Meanwhile, low precipitation and dry environment could have enhanced the concentrations of inorganic species in the arid region than other sites over the central Himalayas. This work adds new dataset of inorganic pollutants in wet precipitation and provides baseline information for an arid region environmental protection. However, there is a need for further long-term monitoring to understand the precipitation chemistry of the arid regions. |
英文关键词 | Mercury Trace elements Major ions Wet deposition Semi-arid region Himalayas |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000513182600003 |
WOS关键词 | ATMOSPHERIC BROWN CLOUDS ; NAM CO REGION ; PRECIPITATION CHEMISTRY ; CHEMICAL-COMPOSITION ; LONG-TERM ; TIBETAN PLATEAU ; JIAOZHOU BAY ; LARGEST CITY ; REMOTE SITE ; RURAL SITE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/278837 |
专题 | 地球科学 |
作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100085, Peoples R China; 3.Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China; 4.HERI, Kathmandu, Nepal; 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 6.Tribhuvan Univ, Cent Dept Environm Sci, Kathmandu, Nepal; 7.Tribhuvan Univ, Cent Dept Hydrol & Meteorol, Kathmandu, Nepal; 8.Lappeenranta Univ Technol, Lab Green Chem, Sammonkatu 12, FI-50130 Mikkeli, Finland |
推荐引用方式 GB/T 7714 | Tripathee, Lekhendra,Guo, Junming,Kang, Shichang,et al. Measurement of mercury, other trace elements and major ions in wet deposition at Jomsom: The semi-arid mountain valley of the Central Himalaya[J]. ATMOSPHERIC RESEARCH,2020,234. |
APA | Tripathee, Lekhendra.,Guo, Junming.,Kang, Shichang.,Paudyal, Rukumesh.,Sharma, Chhatra Mani.,...&Sillanpaa, Mika.(2020).Measurement of mercury, other trace elements and major ions in wet deposition at Jomsom: The semi-arid mountain valley of the Central Himalaya.ATMOSPHERIC RESEARCH,234. |
MLA | Tripathee, Lekhendra,et al."Measurement of mercury, other trace elements and major ions in wet deposition at Jomsom: The semi-arid mountain valley of the Central Himalaya".ATMOSPHERIC RESEARCH 234(2020). |
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