New evidence for atmospheric mercury transformations in the marine boundary layer

doi:10.5194/acp-2020-397

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-397
	New evidence for atmospheric mercury transformations in the marine boundary layer
	Ben Yu, Lin Yang, Linlin Wang, Hongwei Liu, Cailing Xiao, Yong Liang, Qian Liu, Yongguang Yin, Ligang Hu, Jianbo Shi, and Guibin Jiang
	2020-05-06
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	Marine boundary layer (MBL) is the largest transport place and reaction vessel of atmospheric mercury (Hg). The transformations of atmospheric Hg in MBL are crucial for the global transport and deposition of Hg. Herein, Hg isotopic signatures in total gaseous mercury (TGM) and particulate bound Hg (PBM) collected during three cruises to Chinese seas in summer and winter were measured to reveal the transformation processes of atmospheric Hg in the MBL. Unlike the observation results at inland sites, isotopic compositions in TGM from MBL were shaped not only by mixing continental emissions, but also largely by the oxidation of Hg⁰ primarily derived by Br atoms. Lower air temperature could promote the positive MIF in TGM in summer, while the relative processes might be weak in winter. In contrast, the positive Δ¹⁹⁹Hg and high ratios of Δ¹⁹⁹Hg / Δ²⁰¹Hg in PBM indicated that alternative oxidants other than Br or Cl atoms played a major role in the formation of Hg(II) in PBM, likely following the nuclear volume effect. Our results suggested the importance of local Hg environmental behaviours caused by an abundance of highly reactive species, and provided new evidence for understanding the complicated transformations of atmospheric Hg in the MBL.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/248814
专题	地球科学
推荐引用方式 GB/T 7714	Ben Yu, Lin Yang, Linlin Wang, Hongwei Liu, Cailing Xiao, Yong Liang, Qian Liu, Yongguang Yin, Ligang Hu, Jianbo Shi, and Guibin Jiang. New evidence for atmospheric mercury transformations in the marine boundary layer[J]. Atmospheric Chemistry and Physics,2020.
APA	Ben Yu, Lin Yang, Linlin Wang, Hongwei Liu, Cailing Xiao, Yong Liang, Qian Liu, Yongguang Yin, Ligang Hu, Jianbo Shi, and Guibin Jiang.(2020).New evidence for atmospheric mercury transformations in the marine boundary layer.Atmospheric Chemistry and Physics.
MLA	Ben Yu, Lin Yang, Linlin Wang, Hongwei Liu, Cailing Xiao, Yong Liang, Qian Liu, Yongguang Yin, Ligang Hu, Jianbo Shi, and Guibin Jiang."New evidence for atmospheric mercury transformations in the marine boundary layer".Atmospheric Chemistry and Physics (2020).