Application of boron isotope ratios for identifying nitrate contamination sources in the groundwater of Avra Valley, Arizona.

Persistent Link:
http://hdl.handle.net/10150/192087
Title:
Application of boron isotope ratios for identifying nitrate contamination sources in the groundwater of Avra Valley, Arizona.
Author:
Leenhouts, James M.(James Merrell),1968-
Issue Date:
1994
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:
The stable isotopes of the conservative element boron, ¹¹B and ¹⁰B, have been employed as co-migrating isotopic tracers to determine the origin of nitrate observed in groundwater from a large capacity 0.167 m³/s (2500 gpm) irrigation well in the Avra Valley of southeastern Arizona. The isotopic ratios of the conservative element, boron, provided an identifying signature for various nitrate rich source waters. Additional chemical parameters were also examined to corroborate the isotopic indications. Findings of this investigation indicate that most of the nitrate observed in groundwater from well CMID 18 at the beginning of the 1993 irrigation season was due to municipal wastewater infiltration. As the irrigation season progressed, an increasing proportion of nitrate was contributed by irrigation return flow from neighboring agricultural fields.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Boron -- Isotopes.; Nitrates -- Arizona.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Bassett, Randy L.; Maddock, Thomas

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleApplication of boron isotope ratios for identifying nitrate contamination sources in the groundwater of Avra Valley, Arizona.en_US
dc.creatorLeenhouts, James M.(James Merrell),1968-en_US
dc.contributor.authorLeenhouts, James M.(James Merrell),1968-en_US
dc.date.issued1994en_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.abstractThe stable isotopes of the conservative element boron, ¹¹B and ¹⁰B, have been employed as co-migrating isotopic tracers to determine the origin of nitrate observed in groundwater from a large capacity 0.167 m³/s (2500 gpm) irrigation well in the Avra Valley of southeastern Arizona. The isotopic ratios of the conservative element, boron, provided an identifying signature for various nitrate rich source waters. Additional chemical parameters were also examined to corroborate the isotopic indications. Findings of this investigation indicate that most of the nitrate observed in groundwater from well CMID 18 at the beginning of the 1993 irrigation season was due to municipal wastewater infiltration. As the irrigation season progressed, an increasing proportion of nitrate was contributed by irrigation return flow from neighboring agricultural fields.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshBoron -- Isotopes.en_US
dc.subject.lcshNitrates -- Arizona.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, Randy L.en_US
dc.contributor.chairMaddock, Thomasen_US
dc.identifier.oclc221694271en_US
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