Tag Archives: oxidized mercury

Upper Atmosphere Facilitates Changes That Let Mercury Enter Food Chain

By Guest PostJanuary 5, 2012Environmentaquatic ecosystems, atmosphere, bacteria, bangor, broomfield, chemical reactor, climate conditions, coal burning in asia, daniel jaffe, ecosystem impacts, Europe, food chain, humans, lower stratosphere, maine, mercury, mercury contaminated fish, mercury emissions, metallic element, methyl mercury, North America, oxidation, oxidized mercury, research aircraft, seth lyman, southwest united states, university of washington bothell, upper atmosphere, upper troposphere, vapor

Humans pump thousands of tons of vapor from the metallic element mercury into the atmosphere each year, and it can remain suspended for long periods before being changed into a form that is easily removed from the atmosphere.

New research shows that the upper troposphere and lower stratosphere work to transform elemental mercury into oxidized mercury, which can easily be deposited into aquatic ecosystems and ultimately enter the food chain. (more…)

Air Above Dead Sea Contains Very High Levels of Oxidized Mercury

By Guest PostNovember 30, 2010Environmentatmosphere, bromine, chlorine, daniel obrist, dead sea, fluorine, global ecosystems, halogens, hebrew, iodine, mercury, non-metal elements, oxidized mercury, polar regions, potent neurotoxin, sea of salt, yam ha-melah

*First such levels measured outside polar regions*

In Hebrew, the Dead Sea is called Yam ha-Melah, the “sea of salt.” Now measurements show that the sea’s salt has profound effects on the chemistry of the air above its surface.

The atmosphere over the Dead Sea, researchers have found, is laden with oxidized mercury. Some of the highest levels of oxidized mercury ever observed outside the polar regions exist there. (more…)