Concentration and risk assessments of mercury along the elevation gradient in soils of Langtang Himalayas, Nepal | |
Tripathee, L (Tripathee, Lekhendra)1,3; Guo, JM (Guo, Junming)1; Kang, SC (Kang, Shichang)1,2; Paudyal, R (Paudyal, Rukumesh)1,3; Huang, J (Huang, Jie)4; Sharma, CM (Sharma, Chhatra Mani)3,5; Zhang, QG (Zhang, Qianggong)4; Rupakheti, D (Rupakheti, Dipesh)4; Chen, PF (Chen, Pengfei)1; Ghimire, PS (Ghimire, Prakriti Sharma)1,3; Gyawali, A (Gyawali, Ayush)5 | |
Source Publication | HUMAN AND ECOLOGICAL RISK ASSESSMENT |
2019 | |
Volume | 25Issue:4Pages:1006-1017 |
DOI | 10.1080/10807039.2018.1459180 |
Abstract | The fragile Himalayan region could be regarded as the sink for various pollutants transported from urbanized and polluted areas of South Asia. Therefore, in order to understand the concentrations, spatial distribution, pollution, and risk assessments of toxic heavy metal, mercury (Hg), surface soil samples were taken from the central Himalayas in the Langtang region. The average THg concentration in the Langtang Himalayas was 35.75 +/- 24.41(ngg(-1)), which is comparable to the Tibetan top soil values and slightly lower than world average soil values. In addition, an inverse relationship of THg with elevation were observed (i.e. decrease in concentration with increase in elevation) in the Langtang Himalayan soils. Meanwhile, THg concentrations and TOC% were significantly positively correlated at both the depths (0-10 and 10-20 cm), inferring the sorption capacity of organic carbon for Hg. The results of the geo-accumulation index (I-geo), enrichment factor (EF), and pollution index (PI) indicated limited or no pollution by Hg in the Himalayan soils. Further, surface soils had a low potential ecological risk in the region. Therefore, the Hg value from this study could be used for the further evaluation and calculation of I-geo, EF, and PI for water, soil, and aerosol in the Himalayan region as background reference value. However, Hg pollution from long-range transport and atmospheric deposition (wet/dry) in future could not be ignored in the Himalayan region. |
Subject Area | Environmental Sciences |
WOS ID | WOS:000472553200013 |
Language | 英语 |
Indexed By | SCI |
Keyword | Trace-elements Surface Soil Tibetan Deposition Glacier Metals Forest Area |
WOS Research Area | Biodiversity & Conservation ; Environmental Sciences & Ecology |
WOS Subject | Biodiversity Conservation ; Environmental Sciences |
Cooperation Status | 国际 |
ISSN | 1080-7039 |
Department | 环境变化与地表过程 |
URL | 查看原文 |
Publisher | TAYLOR & FRANCIS INC |
Subtype | Article |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.itpcas.ac.cn/handle/131C11/9298 |
Collection | 图书馆 |
Corresponding Author | Guo, JM (Guo, Junming) |
Affiliation | 1.Chinese Acad Sci, State Key Lab Cryospher Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China; 2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China; 3.HERI, Kathmandu, Nepal; 4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China; 5.Kathmandu Univ, Dept Environm Sci & Engn, Dhulikhel, Nepal. |
Recommended Citation GB/T 7714 | Tripathee, L ,Guo, JM ,Kang, SC ,et al. Concentration and risk assessments of mercury along the elevation gradient in soils of Langtang Himalayas, Nepal[J]. HUMAN AND ECOLOGICAL RISK ASSESSMENT,2019,25(4):1006-1017. |
APA | Tripathee, L .,Guo, JM .,Kang, SC .,Paudyal, R .,Huang, J .,...&Gyawali, A .(2019).Concentration and risk assessments of mercury along the elevation gradient in soils of Langtang Himalayas, Nepal.HUMAN AND ECOLOGICAL RISK ASSESSMENT,25(4),1006-1017. |
MLA | Tripathee, L ,et al."Concentration and risk assessments of mercury along the elevation gradient in soils of Langtang Himalayas, Nepal".HUMAN AND ECOLOGICAL RISK ASSESSMENT 25.4(2019):1006-1017. |
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