'Hg 0' diaporamas de présentation

Every Cloud has a Quicksilver Lining: MERCURY IN THE ENVIRONMENT

Every Cloud has a Quicksilver Lining: MERCURY IN THE ENVIRONMENT. Hg 0. 80. Hg. Hg 2+. 200.59. CH 3 Hg +. Outline. Background Mercury in Adirondack Lake/Watersheds Mercury in Loons Historical Patterns of Mercury Deposition Utility Emission Controls Conclusions.

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Atmospheric Mercury: Emissions, Transport/Fate, Source-Receptor Relationships

Atmospheric Mercury: Emissions, Transport/Fate, Source-Receptor Relationships. Dr. Mark Cohen NOAA Air Resources Laboratory 1315 East West Highway, R/ARL, Room 3316 Silver Spring, Maryland, 20910 mark.cohen@noaa.gov http://www.arl.noaa.gov/ss/transport/cohen.html. Presentation at

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MERCURY REGULATIONS AND MEASUREMENT IN FLUE GASES

MERCURY REGULATIONS AND MEASUREMENT IN FLUE GASES. February 2016. Summary of Advances in CEM-Based Mercury flue gas measurements, Stimulated by - US EPA Emission Regulations & QA/QC - Challenges of measuring H g in flue gas - Performance evaluations at low H g Levels - Technical Advances.

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Testing and Application of the CMAQ Mercury Model

O. Russell Bullock, Jr. National Oceanic and Atmospheric Administration (NOAA) Atmospheric Sciences Modeling Division (in partnership with the U.S. Environmental Protection Agency) Western Regional Air Partnership (WRAP) Technical Analysis Forum Boise, ID 23 May 2007.

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HYSPLIT Modeling in Phase II of the EMEP Mercury Modeling Intercomparison Study

HYSPLIT Modeling in Phase II of the EMEP Mercury Modeling Intercomparison Study. Dr. Mark Cohen Physical Scientist NOAA Air Resources Laboratory Silver Spring, Maryland. Presentation at the Expert Meeting on Mercury Model Comparison MSC-East, Moscow, Russia April 15-16, 2003.

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Section 10: Nutrients and their functions

Section 10: Nutrients and their functions. Iron, iodide, mercury. 01/20/06. Iron. Iron is in Hb, Mb, catalase, cytochromes, peroxidases, ferredoxins, hemes, non-hemes, etc. Iron is also toxic, especially in its Fe(III) form.

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MERCURY IN THE ENVIRONMENT

MERCURY IN THE ENVIRONMENT. Daniel J. Jacob. Electronic structure of mercury. Mass number = 80: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 10 4f 14 5s 2 5p 6 5d 10 6s 2. Complete filling of subshells gives Hg(0) a low melting point, volatility

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MERCURY IN THE AIR

Daniel J. Jacob. MERCURY IN THE AIR. with Harvard Team-Hg: Helen Amos, Bess Corbitt , Jenny Fisher, Hannah Horowitz, Chris Holmes (now at UC Irvine), Justin Parrella , Asif Qureshi , Noelle Selin (now at MIT), Anne Soerensen , Elsie Sunderland. and funding from NSF, EPRI, EPA.

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Toxic Metals

Toxic Metals. Elements shown in bold outline are known to be essential for human metabolism. About 1/3 of all known enzymes require the presence of a metal ion for them to exhibit biochemical activity. Toxic metals.

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Watershed Mercury Processes

Watershed Mercury Processes. Natural Emissions. Wet Deposition. Dry Deposition. Evasion. Anthropogenic Emissions. Litterfall and Throughfall. Runoff and Erosion. Percolation. Rivers and Streams. Shallow Ground Water. Evasion. Settling Resuspension Diffusion. Weathering.

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Spring Celebration

Spring Celebration. Nanotechnology-Based Environmental Sensing. Donald Lucas, Ph.D. D_lucas@lbl.gov Profs. Cathy Koshland (PI), Lydia Sohn, Peidong Yang, and John Arnold. Why Nanotechnology?.

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A laboratory study of Hg oxidation catalyzed by SCR catalysts

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Trans-Pacific Transport of Mercury

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Role of Ocean Emissions in the Mercury Budget

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Speciated mercury emissions from laboratory combustion of wildland fuel

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CW Moore et al. Nature 000 , 1-4 (2014) doi:10.1038/nature12924

Impact of sea-ice leads on Hg(0) and O 3 in 2009. CW Moore et al. Nature 000 , 1-4 (2014) doi:10.1038/nature12924.

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