Characterization of crushed tuff for the evaluation of the fate of tracers in transport studies in the unsaturated zone

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Description

Results of field-scale (caisson) transport studies under unsaturated moisture and steady and nonsteady flow conditions indicate variability and a lack of conservation of mass in solute transport. The tuff materials used in that study were analyzed for the presence of tracers and of freshly precipitated material to help explain the variability and lack of conservation of mass. Selected tuff samples were characterized by neutron activation analysis for tracer identification, by x-ray diffraction for mineral identification, by petrographic analysis for identification of freshly precipitated material, and by x-ray fluorescence analysis for identification of major and trace elements. The results of these ... continued below

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Medium: P; Size: 45 p.

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Polzer, W.L.; Fuentes, H.R.; Raymond, R.; Bish, D.L.; Gladney, E.S. & Lopez, E.A. March 1, 1987.

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Description

Results of field-scale (caisson) transport studies under unsaturated moisture and steady and nonsteady flow conditions indicate variability and a lack of conservation of mass in solute transport. The tuff materials used in that study were analyzed for the presence of tracers and of freshly precipitated material to help explain the variability and lack of conservation of mass. Selected tuff samples were characterized by neutron activation analysis for tracer identification, by x-ray diffraction for mineral identification, by petrographic analysis for identification of freshly precipitated material, and by x-ray fluorescence analysis for identification of major and trace elements. The results of these analyses indicate no obvious presence of freshly precipitated material that would retard tracer movement. The presence of the nonsorbing tracers (bromide and iodide) suggest the retention of these tracers in immobile water. The presence of the nonsorbing tracers (bromide and iodide) suggest the retention of these tracers in immobile water. The presence of sorbing and nonsorbing tracers on the tuff at some locations (even cesium at the 415-cm depth) and not at others suggests variability in transport. 15 refs., 14 figs., 9 tabs.

Physical Description

Medium: P; Size: 45 p.

Notes

NTIS, PC A03/MF A01 - GPO; OSTI as TI87008301

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  • Other Information: PBD: Mar 1987

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  • Other: TI87008301
  • Report No.: NUREG/CR--4875
  • Report No.: LA--10962-MS
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/59984 | External Link
  • Office of Scientific & Technical Information Report Number: 59984
  • Archival Resource Key: ark:/67531/metadc691256

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  • March 1, 1987

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  • Aug. 14, 2015, 8:43 a.m.

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  • July 28, 2016, 7:09 p.m.

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Polzer, W.L.; Fuentes, H.R.; Raymond, R.; Bish, D.L.; Gladney, E.S. & Lopez, E.A. Characterization of crushed tuff for the evaluation of the fate of tracers in transport studies in the unsaturated zone, report, March 1, 1987; New Mexico. (digital.library.unt.edu/ark:/67531/metadc691256/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.