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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Environmental Radioactivity Measurement Facility. Department of Oceanography Florida State University Tallahassee, Florida USA. Objectives. Study the distribution of U/Th decay-series nuclides to address problems in the earth/marine sciences. - PowerPoint PPT Presentation

Transcript of Environmental Radioactivity Measurement Facility

Page 1: Environmental Radioactivity Measurement Facility

Environmental Radioactivity Measurement Facility

Department of Oceanography

Florida State University

Tallahassee, Florida

USA

Page 2: Environmental Radioactivity Measurement Facility

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