ARL News Mercury Speciation And Deposition In The Arctic   June 26, 2001 Most of the mercury in the atmosphere is as elemental mercury, in gaseous form. It is only a small part of the total mercury burden of the air that is chemically reactive. This reactive gaseous murcury (RGM) deposits to the surface, enabling … Continue reading ARL News: Mercury speciation and deposition in the Arctic – June 26, 2001