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Mercury and Methylmercury

By: Cory Vogel and Dallas Dornath

Dallas Dornath

on 16 April 2010

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Transcript of Mercury and Methylmercury

Mercury and Methylmercury The formulas for Mercury and Methylmercury are:

Hg and CH3Hg Mercury:


Sources of Mercury:

There are many sources of mercury such as natural mercury deposits, volcanoes, humans burning coal, and humans burning waste. Sources of Methylmercury:

Methylmercury enters the water or ecosystems from bacteria changing inroganic Mercury into Methylmercury. Dangers of Mercury:

Mercury becomes toxic to humans when it starts to bioaccumulate. Bioaccumulation happens when we take in more Mercury than our bodies can get rid of. Dangers of Methylmercury:

Methylmercury also undergoes bioaccumulation, however our bodies have not built up a good defense against the accumulation of Methylmercury, which can affect the central mervous system, and in severe cases damage parts of the brain beyond repair. Scientists test for Mercury in water by sticking a gold nanorod which absorbs mercury from a sample and then an optical spectrometer measures changes in the nanorod's light absorption. However, we could not find how Methylmercury was measured in the water. Mercury is filtered from the water by using a process called reverse osmosis. Reverse osmosis in chemistry terms is when a solvent passes through a semipermeable membrane in a direction opposite to that for natural osmosis when it's subjected to a hydrostatic pressure greater than the osmotic pressure. Methylmercury is removed in the same way as Mercury by using reverse osmosis. The formula for removing Mercury and methylmercury from water are hard to find apparently as we could only find the reverse osmosis machine.
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