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in creator/contributor: "Repeta, D. J."  
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Speciation and structural characterization of plutonium and actinide-organic complexes in surface and ground waters. Annual progress report, September 1996--September 1997

Description: 'The authors proposed research is designed to study the association of actinides with dissolved organic complexes in subsurface waters. Actinide-humic matter associations in natural waters have been investigated previously, but they have postulated that much of the actinide binding activity may be supported by colloidal biopolymers. To investigate this, they are developing techniques to sample and identify organic constituents in groundwater, and to measure the Pu associated with different frac… more
Date: December 31, 1997
Creator: Buessler, K. O. & Repeta, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Speciation and structural characterization of plutonium and actinide-organic complexes in surface and ground waters. Annual progress report, September 1996--September 1997

Description: 'The authors proposed research is designed to study the association of actinides with dissolved organic complexes in subsurface waters. Actinide-humic matter associations in natural waters have been investigated previously, but the authors have postulated that much of the actinide binding activity may be supported by colloidal biopolymers. To investigate this, they are developing techniques to sample and identify organic constituents in groundwater, and to measure the Pu associated with differe… more
Date: January 1, 1997
Creator: Buessler, K. O. & Repeta, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Speciation and structural characterization of Plutonium and Actinide-organic complexes in surface and ground waters (Sept. 1996-Sept. 1999) & Speciation, Mobility and Fate of Actinides in the Groundwater at the Hanford Site (Sept. 1999-Sept. 2002)

Description: Our first project focused on the development and testing of appropriate sampling and analytical techniques to study the association of actinides with dissolved organic complexes in subsurface waters. Our ongoing project is designed for: (1) the determination of the speciation of plutonium and other actinides (Np, U) in groundwater at the 100 and 200 areas at the Hanford Site. This includes the separation of Pu into particulate, colloidal and <1 kilo- Dalton dissolved phases and the determina… more
Date: June 1, 2000
Creator: Buesseler, K. O.; Dai, M. & Repeta, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Speciation, Mobility and Fate of Actinides in the Groundwater at the Hanford Site (Sept. 1999-Sept. 2002)

Description: The objectives of this project are: (1) the determination of the speciation of plutonium and other actinides (Np, U) in groundwater at the 100 and 200 areas at the Hanford Site. This includes the separation of Pu into particulate, colloidal and <1 kilo-Dalton dissolved phases and the determination of redox states and isotopic composition in each fraction; (2) the characterization of groundwater colloids, which includes submicron-sized inorganic particles and organic macromolecules (3) the pr… more
Date: May 31, 2001
Creator: Buesseler, K. O.; Dai, M. & Repeta, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Speciation and structural characterization of plutonium and actinide-organic complexes in surface and groundwaters. 1998 annual progress report

Description: 'The authors proposed research is designed to study the association of actinides with dissolved organic complexes in subsurface waters. This study expands considerably on prior work due to the combination of Pu oxidation studies (for Pu speciation/chemical reactivity information), Pu isotope ratio work (for Pu source function information), and the detailed characterization of organic matter in size-fractionated groundwater samples. The authors have postulated that actinide associations with org… more
Date: June 1998
Creator: Buesseler, K. O.; Repeta, D. J. & Kelley, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Speciation and structural characterization of plutonium and actinide-organic complexes in surface and groundwaters. 1998 annual progress report

Description: 'The authors proposed research is designed to study the association of actinides with dissolved organic complexes in subsurface waters. This study expands considerably on prior work due to the combination of Pu oxidation studies (for Pu speciation/chemical reactivity information), Pu isotope ratio work (for Pu source function information), and the detailed characterization of organic matter in size-fractionated groundwater samples. They have postulated that actinide associations with organic ma… more
Date: June 1, 1998
Creator: Buesseler, K. O.; Repeta, D. J. & Kelley, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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