气候变化领域集成服务门户(CCPortal): First measurement of atmospheric mercury species in Qomolangma Natural Nature Preserve; Tibetan Plateau; and evidence oftransboundary pollutant invasion

CCPortal

DOI	10.5194/acp-19-1373-2019
	First measurement of atmospheric mercury species in Qomolangma Natural Nature Preserve; Tibetan Plateau; and evidence oftransboundary pollutant invasion
	Lin H.; Tong Y.; Yin X.; Zhang Q.; Zhang H.; Zhang H.; Chen L.; Kang S.; Zhang W.; Schauer J.; De Foy B.; Bu X.; Wang X.
发表日期	2019
ISSN	16807316
起始页码	1373
结束页码	1391
卷号	19 期号:2
英文摘要	Located in the world's "third pole" and a remote region connecting the Indian plate and the Eurasian plate, Qomolangma National Nature Preserve (QNNP) is an ideal region to study the long-range transport of atmospheric pollutants. In this study, gaseous elemental mercury (GEM), gaseous oxidized mercury (GOM) and particle-bound mercury (PBM) were continuously measured during the Indian monsoon transition period in QNNP. A slight increase in the GEM concentration was observed from the period preceding the Indian summer monsoon (1:31±0:42 ngm -3 ) to the Indian summer monsoon period (1:44±0:36 ngm -3 ), while significant decreases were observed in the GOM and PBM concentrations, with concentrations decreasing from 35:2±18:6 to 19:3±10:9 pgm -3 (p<0:001) for GOM and from 30:5±12:5 to 24:9±19:8 pgm -3 (p<0:001) for PBM. A unique daily pattern was observed in QNNP with respect to the GEM concentration, with a peak value before sunrise and a low value at noon. Relative to the (low) GEM concentrations, GOM concentrations (with a mean value of 21:4±13:4 pgm -3 , n D 1239) in this region were relatively high compared with the measured values in some other regions of China. A cluster analysis indicated that the air masses transported to QNNP changed significantly at different stages of the monsoon, and the major potential mercury (Hg) sources shifted from northern India and western Nepal to eastern Nepal and Bangladesh. As there is a large area covered in glaciers in QNNP, local glacier winds could increase the transboundary transport of pollutants and transport polluted air masses to the Tibetan Plateau. The atmospheric Hg concentration in QNNP in the Indian summer monsoon period was influenced by transboundary Hg flows. This highlights the need for a more specific identification of Hg sources impacting QNNP and underscores the importance of international cooperation regarding global Hg controls. © 2019 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	atmospheric pollution; cluster analysis; concentration (composition); long range transport; mercury (element); monsoon; pollutant transport; China; Qomolangma National Nature Preserve; Xizang
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144677
作者单位	MOE Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China; School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China; State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100039, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, 100085, China; State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China; School of Geographic Sciences, East China Normal University, Shanghai, 200241, China; School of Environment and Natural Resources, Renmin University of China, Beijing, 100872, China; Department ...
推荐引用方式 GB/T 7714	Lin H.,Tong Y.,Yin X.,et al. First measurement of atmospheric mercury species in Qomolangma Natural Nature Preserve; Tibetan Plateau; and evidence oftransboundary pollutant invasion[J],2019,19(2).
APA	Lin H..,Tong Y..,Yin X..,Zhang Q..,Zhang H..,...&Wang X..(2019).First measurement of atmospheric mercury species in Qomolangma Natural Nature Preserve; Tibetan Plateau; and evidence oftransboundary pollutant invasion.Atmospheric Chemistry and Physics,19(2).
MLA	Lin H.,et al."First measurement of atmospheric mercury species in Qomolangma Natural Nature Preserve; Tibetan Plateau; and evidence oftransboundary pollutant invasion".Atmospheric Chemistry and Physics 19.2(2019).