mercury

mercury - The Biogeochemistry of Mercury Principal forms...

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Unformatted text preview: The Biogeochemistry of Mercury Principal forms and transformations of mercury in the environment (redrawn from Jitaru and Adams 2004) Terrestrial Hg cycle Terrestrial Hg cycle (redrawn from Hall 2007) Terrestrial Hg balance (redrawn from Drigal 2002) The importance of wetlands (redrawn from Drigal 2002) Separating the new from the old Aquatic Hg cycle (redrawn from Huckabee et al 1994) Bioacumulation and biomagnification Methyl mercury concentration in a typical freshwater foodweb (Redrawn from Jones and Slotton 1996) Mercury dynamics in the atmosphere Natural sources of mercury Anthropogenic sources of mercury Historical deposition The geography of Hg contamination Who is responsible ? What are the main anthropogenic sources? Where does it all go? Does pollution control work? Mercury in Reservoirs Fludex Experiments: short term effects (redrawn from Hall et al 2005) (redrawn from Bodaly et al 1994) Long term effects (redrawn from Bodaly et al 1994) Effects on aquatic biota 1992 ANO 2003 0,0 0,4 0,8 0,2 0,6 1,0 1997 Hg -tot, ppm A B Effects on human populations Peacock bass Human hair (Weisser and Forsberg, unpublished) Mercury in the Amazon goldminers and peacock bass 4...
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mercury - The Biogeochemistry of Mercury Principal forms...

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