Lec18_Eutrophication_Anoxia

Lec18_Eutrophication_Anoxia - Lecture 18: Eutrophication...

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Lecture 18: Eutrophication and Anoxia CHEM/ENVS 380, Apr 29, 2010 http://www.smm.org/deadzone/top.htm Science Museum of Minnesota
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http://toxics.usgs.gov/hypoxia/hypoxic_zone.html What’s this in ppm? Area of CT Area of NJ
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Spreading Dead Zones
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What is the Solubility of O 2 in Water? Partial pressure of O 2 in air: The Henry’s Law: [O 2 (aq)] = K H P O2 Sarmiento and Gruber, Ocean Biogeochemical Dynamics, Princeton Univ. Press, 2006. 6
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Calculate the concentration of dissolved O 2 in a body of water which is in equilibrium with air at 25 deg.C. K H of oxygen at 25 deg.C is 1.3 x 10 -3 mol L -1 atm -1 . Report the answer in mol L -1 , mg L -1 , and in ppm. Occasionally, dissolved O 2 is given in mL L -1 by computing the volume that the dissolved gas would occupy if it were a dry gas at 273 K and 1 atm (STP). The vol of 1 mol of ideal gas at STP is 22.4 L.
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Concentration in a Body of Water? Abiological factors?
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Lec18_Eutrophication_Anoxia - Lecture 18: Eutrophication...

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