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Establishment of concentration ratios for riparian and shrub steppe areas of the eastern Washington Columbia basin

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dc.contributor.advisor Higley, Kathryn A.
dc.creator Napier, Jonathan Bamberger
dc.date.accessioned 2012-10-22T15:45:37Z
dc.date.available 2012-10-22T15:45:37Z
dc.date.copyright 2012-09-12
dc.date.issued 2012-09-12
dc.identifier.uri http://hdl.handle.net/1957/34549
dc.description Graduation date: 2013 en_US
dc.description.abstract Concentration ratios are used to determine the transfer of nuclides from soil to biota to fauna. Some nuclides have limited associated data though, this has not prevented predictions from being performed at sites without associated data. These ratios are site specific and are not fully applicable when applied to other locations. A recent literature review for a waste repository performance assessment determined that a significant portion of the environmental data was based on recursively published material. To address this deficiency neutron activation analysis (NAA) was used to determine concentration ratios of certain biota. Three sites, two riparian and one shrub steppe, were sampled in the eastern Washington Columbia basin, near the Hanford site. Two hundred and fifty eight samples of opportunity were collected. This included 15 soil samples, 10 water and sediment samples, 40 different species of biota, and 2 terrestrial animal species and 3 aquatic animal species. These samples were prepared for NAA by drying, weighing, and in certain cases ashing to improve detection efficiency. After activation, the samples were placed in a HPGe detector to perform spectral analysis. The concentration results of 26 elements of interest are presented, along with newly established concentration ratios for all of the species sampled. en_US
dc.language.iso en_US en_US
dc.relation Oregon Explorer en_US
dc.subject concentration en_US
dc.subject Hanford en_US
dc.subject riparian en_US
dc.subject Washington en_US
dc.subject ratio en_US
dc.subject shrub en_US
dc.subject steppe en_US
dc.subject stable en_US
dc.subject element en_US
dc.subject.lcsh Nuclear activation analysis -- Washington (State) -- Hanford Site en_US
dc.subject.lcsh Radioecology -- Washington (State) -- Hanford Site en_US
dc.subject.lcsh Animals -- Radioactive contamination -- Washington (State) -- Hanford Site en_US
dc.subject.lcsh Plants -- Radioactive contamination -- Washington (State) -- Hanford Site en_US
dc.subject.lcsh Radioactive pollution -- Bioaccumulation -- Washington (State) -- Hanford Site en_US
dc.subject.lcsh Radioactive pollution of soils -- Washington (State) -- Hanford Site en_US
dc.subject.lcsh Radioactive substances in rivers, lakes, etc. -- Washington (State) -- Hanford Site en_US
dc.title Establishment of concentration ratios for riparian and shrub steppe areas of the eastern Washington Columbia basin en_US
dc.type Thesis/Dissertation en_US
dc.degree.name Master of Science (M.S.) in Radiation Health Physics en_US
dc.degree.level Master's en_US
dc.degree.discipline Engineering en_US
dc.degree.grantor Oregon State University en_US
dc.contributor.committeemember Hamby, David
dc.contributor.committeemember Minc, Leah
dc.contributor.committeemember Cohen, LeoNore
dc.description.peerreview no en_us


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