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Domestic and Transboundary Sources of Atmospheric Particulate Bound Mercury in Remote Areas of China: Evidence from Mercury Isotopes
Xuewu Fu; Hui Zhang; Xinbin Feng; Qingyou Tan; Lili Ming; Chen Liu; Leiming Zhang
2019
Source PublicationEnvironmental Science & Technology
Volume53Issue:4Pages:1947-1957
Abstract

Isotopic composition of atmospheric particulate bound mercury (PBM) was obtained at four remote sites in different geographical regions of China for three to 12 month periods. Mean (±1σ) Δ199HgPBM was the highest at the site in southwestern China (0.66 ± 0.32‰), followed by the site in northeastern China (0.36 ± 0.34‰), the site in the marine boundary layer of East China Sea (0.35 ± 0.33‰), and was the lowest at the site in northwestern China (0.27 ± 0.22‰). Δ199HgPBM was relatively higher in cold than warm season at the sites in northwestern and southwestern China, whereas the opposite was found at the site in northeastern China. We propose that the seasonal variations of Δ199HgPBM were influenced by the exposure of air masses to regional (e.g., anthropogenic and dust related) and long-range (e.g., anthropogenic and oceanic) sources in the preceding several days, with the former characterized by lower Δ199HgPBM and the latter characterized by more positive Δ199HgPBM due to sufficient atmospheric transformations. Modeling results from Potential Source Contribution Function suggested that domestic anthropogenic emission was the major contributor to PBM pollution at the sites in northeastern and eastern China, whereas long-range transboundary transport of PBM from South Asia played a more important role at the sites in southwestern and northwestern China.

Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/10248
Collection环境地球化学国家重点实验室
Affiliation1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 99 Lincheng West Road, Guiyang, 550081, China
2.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, HungHom, Kowloon, Hong Kong
3.Air Quality Research Division, Science and Technology Branch, Environment and Climate Change Canada, Burlington, Ontario L7S 1A1, Canada
Recommended Citation
GB/T 7714
Xuewu Fu,Hui Zhang,Xinbin Feng,et al. Domestic and Transboundary Sources of Atmospheric Particulate Bound Mercury in Remote Areas of China: Evidence from Mercury Isotopes[J]. Environmental Science & Technology,2019,53(4):1947-1957.
APA Xuewu Fu.,Hui Zhang.,Xinbin Feng.,Qingyou Tan.,Lili Ming.,...&Leiming Zhang.(2019).Domestic and Transboundary Sources of Atmospheric Particulate Bound Mercury in Remote Areas of China: Evidence from Mercury Isotopes.Environmental Science & Technology,53(4),1947-1957.
MLA Xuewu Fu,et al."Domestic and Transboundary Sources of Atmospheric Particulate Bound Mercury in Remote Areas of China: Evidence from Mercury Isotopes".Environmental Science & Technology 53.4(2019):1947-1957.
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