Fractionation of stable chlorine isotopes during transport through semipermeable membranes

Persistent Link:
http://hdl.handle.net/10150/191280
Title:
Fractionation of stable chlorine isotopes during transport through semipermeable membranes
Author:
Campbell, Darcy Jo.
Issue Date:
1985
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 isotope ratio of chlorine is a potential hydrogeochemical tool. A recently-developed technique allows detection of differences in the isotope ratio of water samples. Measured variations cover a range of 3.0 ± 0.12 per mil. In deep aquifer brines, enrichment in 37C1 seems to increase with increasing chloride concentration. Two types of experiments were performed, short-term (9-20 days) and long-term (five months), in an effort to produce fractionation in the laboratory. The short-term experiments involved isothermal diffusion of chloride across six synthetic, semipermeable, cation-exchange membranes. Variables in the experiments were cation-exchange capacity, pore size, concentration, and stirring. The long-term experiment involved the forced flow of a sodium chloride solution through a bentonite membrane. Both types of experiments produced over 1.2 ± 0.12 per mil fractionation, with isotopically heavier effluent solutions. Fractionation appears to increase with increasing cation-exchange capacity. Conceptual and mathematical models are presented.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Chlorine -- Isotopes.; Groundwater tracers.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Davis, Stanley N.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleFractionation of stable chlorine isotopes during transport through semipermeable membranesen_US
dc.creatorCampbell, Darcy Jo.en_US
dc.contributor.authorCampbell, Darcy Jo.en_US
dc.date.issued1985en_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 isotope ratio of chlorine is a potential hydrogeochemical tool. A recently-developed technique allows detection of differences in the isotope ratio of water samples. Measured variations cover a range of 3.0 ± 0.12 per mil. In deep aquifer brines, enrichment in 37C1 seems to increase with increasing chloride concentration. Two types of experiments were performed, short-term (9-20 days) and long-term (five months), in an effort to produce fractionation in the laboratory. The short-term experiments involved isothermal diffusion of chloride across six synthetic, semipermeable, cation-exchange membranes. Variables in the experiments were cation-exchange capacity, pore size, concentration, and stirring. The long-term experiment involved the forced flow of a sodium chloride solution through a bentonite membrane. Both types of experiments produced over 1.2 ± 0.12 per mil fractionation, with isotopically heavier effluent solutions. Fractionation appears to increase with increasing cation-exchange capacity. Conceptual and mathematical models are presented.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshChlorine -- Isotopes.en_US
dc.subject.lcshGroundwater tracers.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.chairDavis, Stanley N.en_US
dc.contributor.committeememberSimpson, Geneen_US
dc.contributor.committeememberLong, Austinen_US
dc.identifier.oclc221989642en_US
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