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DOI	10.1016/j.envpol.2021.117317
	Source identification of atmospheric particle-bound mercury in the Himalayan foothills through non-isotopic and isotope analyses*
	Guo, Junming; Sharma, Chhatra Mani; Tripathee, Lekhendra; Kang, Shichang; Fu, Xuewu; Huang, Jie; Shrestha, Kundan Lal; Chen, Pengfei
通讯作者	Tripathee, L (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0269-7491
EISSN	1873-6424
卷号	286
英文摘要	This study reports on the sources of atmospheric particle-bound mercury (HgP) in less studied regions of Nepal based on the analysis of stable mercury (Hg) isotopes in aerosol samples from two neighboring areas with high and low anthropogenic emissions (Kathmandu and Dhulikhel, respectively) during 2018. Although the Indian monsoon and westerlies are generally regarded as the primary carriers of pollutants to this region via the heavily industrialized Indo-Gangetic Plain, the concentrations of total suspended particles (TSP) and HgP in Kathmandu were higher than those in Dhulikhel, thus suggesting a substantial contribution from local sources. Both isotopic (delta 200Hg and Delta 199Hg) and non-isotopic evidence indicated that dust, waste burning, and industrial byproducts (without Hg amalgamation) were the major sources of Hg in Kathmandu during the study period. Mercury may have been transported via air masses from Kathmandu to Dhulikhel, as indicated by the similar organic carbon/ elemental carbon ratios and seasonal trends of TSP and HgP in these two locations. Local anthropogenic sources were found to contribute significantly to atmospheric Hg pollution through dust resuspension. Therefore, dust resuspension should be considered when evaluating the long-range transport of air pollutants such as Hg, particularly in anthropogenically stressed areas.
关键词	PARTICULATE MERCURY SPATIOTEMPORAL VARIATIONS DRY DEPOSITION AMBIENT AIR URBAN SITES CHINA PRECIPITATION ASSOCIATION SPECIATION
英文关键词	Particle-bound mercury (HgP); Stable mercury isotopes; Aerosols; South Asia
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000688586700011
来源期刊	ENVIRONMENTAL POLLUTION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254843
作者单位	[Guo, Junming; Sharma, Chhatra Mani; Tripathee, Lekhendra; Kang, Shichang; Chen, Pengfei] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Sharma, Chhatra Mani] Tribhuvan Univ, Cent Dept Environm Sci, Kathmandu, Nepal; [Tripathee, Lekhendra] Himalayan Environm Res Inst HERI, Kathmandu, Nepal; [Kang, Shichang] CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100085, Peoples R China; [Kang, Shichang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Fu, Xuewu] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, 99 Lincheng West Rd, Guiyang 550081, Peoples R China; [Huang, Jie] Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China; [Shrestha, Kundan Lal] Kathmandu Univ, Dept Environm Sci & Engn, Dhulikhel, Nepal
推荐引用方式 GB/T 7714	Guo, Junming,Sharma, Chhatra Mani,Tripathee, Lekhendra,et al. Source identification of atmospheric particle-bound mercury in the Himalayan foothills through non-isotopic and isotope analyses*[J]. 中国科学院西北生态环境资源研究院,2021,286.
APA	Guo, Junming.,Sharma, Chhatra Mani.,Tripathee, Lekhendra.,Kang, Shichang.,Fu, Xuewu.,...&Chen, Pengfei.(2021).Source identification of atmospheric particle-bound mercury in the Himalayan foothills through non-isotopic and isotope analyses*.ENVIRONMENTAL POLLUTION,286.
MLA	Guo, Junming,et al."Source identification of atmospheric particle-bound mercury in the Himalayan foothills through non-isotopic and isotope analyses*".ENVIRONMENTAL POLLUTION 286(2021).