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Air/Surface Exchange Of Gaseous Elemental Mercury At Different Landscapes In Mississippi, Usa, James V. Cizdziel, Yi Zhang, Divya Nallamothu, J. Stephen Brewer, Zhiqiang Gao

Faculty and Student Publications

© 2019 by the authors. Mercury (Hg) is a global pollutant with human health and ecological impacts. Gas exchange between terrestrial surfaces and the atmosphere is an important route for Hg to enter and exit ecosystems. Here, we used a dynamic flux chamber to measure gaseous elemental Hg (GEM) exchange over different landscapes in Mississippi, including in situ measurements for a wetland (soil and water), forest floor, pond, mowed field and grass-covered lawn, as well as mesocosm experiments for three different agricultural soils. Fluxes were measured during both the summer and winter. Mean ambient levels of GEM ranged between 0.93-1.57 …