Net deposition of mercury to the Antarctic Plateau enhanced
Details of Research
TitleNet deposition of mercury to the Antarctic Plateau enhanced by sea saltAbstractPhotochemically driven mercury (Hg) exchange between the atmosphere and the Antarctic Plateau snowpack has been observed. An imbalance in bidirectional flux causes a fraction of Hg to remain in the snowpack perennially, but the factors that control the amount of Hg sequestered on the Antarctic Plateau are not fully understood. We analyzed sub-annual variations in total Hg (HgT) deposition to Dome Fuji over the period of 1986--2010 using cold vapor inductively coupled plasma mass spectrometry and compared concentrations with those of sea salt components (Na+ and Clâˆ'). HgT ranged from 0.12 to 5.19 pg gâˆ'1 (n = 78) and was relatively high when the Na+ concentrations were high in the same or underlying snow layers. A significant correlation (r = 0.7) was found between the annual deposition fluxes of HgT and Na+. Despite different origins and behavior of Hg and sea salt, the near-synchronous increases in the concentrations and correlation between the fluxes suggest that sea salt can intervene in the air-snow Hg exchange and promote the net deposition of Hg in the Antarctic Plateau. Copyright 2017 Elsevier B.V.AcknowledgementsWe thank all field personnel for sampling during the 51st Japanese Antarctic Research Expedition. This research was supported by the NRF Mid-Career Research Program (No. 2011-0015174) and the Basic Science Research Program (NRF-2014R1A1A3049836) funded by MSIP, research grants (PE16010 and PE17040) from the Korea Polar Research Institute (KOPRI), and the Japan Society for the Promotion of Science (JSPS) (research grant (A) 20241007).Funding Details20241007, JSPS, Japan Society for the Promotion of Science; PE16010, KOPRI, Korea Polar Research Institute; PE17040, KOPRI, Korea Polar Research Institute
TypeArticleCitationHan, Y., Huh, Y., Hur, S., Hong, S., Chung, J., and Motoyama, H. (2017). Net deposition of mercury to the Antarctic Plateau enhanced by sea salt. Science of the Total Environment, 583: 81-87IdentifierHan2017Antarctica NZ supported?NoNZARI?No
Motoyama, H., Net deposition of mercury to the Antarctic Plateau enhanced , [Han2017]. Antarctica NZ, accessed 02/08/2026, https://adam.antarcticanz.govt.nz/nodes/view/63535, 10.1016/j.scitotenv.2017.01.008
