13C and 37Cl characterization of PCE and application to contamination of the Harrison Landfill: Tucson, Arizona

Persistent Link:
http://hdl.handle.net/10150/191332
Title:
13C and 37Cl characterization of PCE and application to contamination of the Harrison Landfill: Tucson, Arizona
Author:
Rosengreen, Sven Albert.
Issue Date:
2000
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Tetrachloroethene (PCE) contamination of groundwater and soil air underneath Harrison Landfill in Tucson, Arizona, likely occurred by downward vapor phase transport of PCE dumped in the landfill. This study has explored the possibility of using isotopic techniques to better understand this process. The author designed and used a technique for the extraction of PCE vapors from soil air, for 6 13C and 637C1 analysis. It involved collecting PCE vapors by passing soil air through PCE adsorbent traps, then processing and transferring the PCE to a combustion tube. The author also measured for 6 13C and 637C1 values from manufactured trichloroethene (TCE, same as measured by another lab) and PCE samples. An additional experiment measured the 6 13C and 837C1 values of the liquid PCE residual after evaporating various fractions of PCE. 8 13C and 837Cl values of the TCE samples previously described were similar to the earlier values, indicating that 8 13C and 637C1 measurements of solvents (including PCE) were reproducible. Successive evaporation of PCE followed a Rayleigh trend, indicating a values of 1.0006 for carbon and 0.9992 for chlorine. The author simulated the PCE soil vapor sampling in the laboratory, achieving high yields and good separation of PCE. 8 13C values from Harrison soil PCE vapors ranged from — 27.3 to —25.1 0/00 and were within previous values for PCE. 637C1 values were at least 2.3 0/00 higher than any previously reported for PCE samples. 637C1 values for PCE, indicated that either the PCE in Harrison landfill became fractionated in situ, or was already 37C1 rich when dumped at the site.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Hazardous waste site remediation.; Organochlorine compounds -- Biodegradation.; Sanitary landfills -- Arizona -- Tucson.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Bassett, Randy

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.title13C and 37Cl characterization of PCE and application to contamination of the Harrison Landfill: Tucson, Arizonaen_US
dc.creatorRosengreen, Sven Albert.en_US
dc.contributor.authorRosengreen, Sven Albert.en_US
dc.date.issued2000en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractTetrachloroethene (PCE) contamination of groundwater and soil air underneath Harrison Landfill in Tucson, Arizona, likely occurred by downward vapor phase transport of PCE dumped in the landfill. This study has explored the possibility of using isotopic techniques to better understand this process. The author designed and used a technique for the extraction of PCE vapors from soil air, for 6 13C and 637C1 analysis. It involved collecting PCE vapors by passing soil air through PCE adsorbent traps, then processing and transferring the PCE to a combustion tube. The author also measured for 6 13C and 637C1 values from manufactured trichloroethene (TCE, same as measured by another lab) and PCE samples. An additional experiment measured the 6 13C and 837C1 values of the liquid PCE residual after evaporating various fractions of PCE. 8 13C and 837Cl values of the TCE samples previously described were similar to the earlier values, indicating that 8 13C and 637C1 measurements of solvents (including PCE) were reproducible. Successive evaporation of PCE followed a Rayleigh trend, indicating a values of 1.0006 for carbon and 0.9992 for chlorine. The author simulated the PCE soil vapor sampling in the laboratory, achieving high yields and good separation of PCE. 8 13C values from Harrison soil PCE vapors ranged from — 27.3 to —25.1 0/00 and were within previous values for PCE. 637C1 values were at least 2.3 0/00 higher than any previously reported for PCE samples. 637C1 values for PCE, indicated that either the PCE in Harrison landfill became fractionated in situ, or was already 37C1 rich when dumped at the site.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshHazardous waste site remediation.en_US
dc.subject.lcshOrganochlorine compounds -- Biodegradation.en_US
dc.subject.lcshSanitary landfills -- Arizona -- Tucson.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairBassett, Randyen_US
dc.identifier.oclc222037261en_US
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