Environmental Radioactivity Measurement Facility
description
Transcript of Environmental Radioactivity Measurement Facility
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Environmental Radioactivity Measurement Facility
Department of Oceanography
Florida State University
Tallahassee, Florida
USA
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Objectives
Study the distribution of U/Th decay-series nuclides to address problems in the earth/marine sciences.
Improve chemical and instrumental techniques for measurement of all radionuclides in the environment.
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U-Series Disequilibrium in the Ocean
238U ~ 3.2 g/L
230Th
226Ra
Seawater
Sediments
238U 234U
237 271
230Th 226Ra
<1 ~10dpm/100L:
(234Th, 231Pa, 210Pb, etc.)
~50
222Rn 210Pb222Rn 222Rn
234Th
var.
R/VEichrom
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FundingFederal: NSF, ONR,
NOAA, EPA
State: FDEP, FIPR, FDOH
Private: PG Research Foundation, ACS, Earthwatch
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Current Projects
Tracing of groundwater discharge into the coastal zone via Rn-222, radium isotopes
Automated Rn-222 in water and improved Ra-224 via Mn-fiber/Rn counting
Radioanalytical analysis of large volume environmental samples via Diphonix
Th-234 in marine sediments via extraction chromatography - LSC
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Graduate Students - M.S.
Jamie Christoff Michael Lambert
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Graduate Students - Ph.D.
Henrieta Dulaiova Svetlana Nour
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Other Personnel
Guebuem Kim, Ph.DPostdoc
Mike Schultz,ABD
Reide Corbett, Ph.DAsst. Prof.
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Undergraduates
Igor Nathan
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Scientific Advisor
“Bill…you need to use Diphonix resin to remove sample matrix and make
your life easier”
I wonder when FSU is going to play a real football
team…
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Remove the Sample Matrix…?
It…Could…Work…!!!
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Environmental Radioactivity Measurement Facility
FSU
The EndThe End