The Resource Aspects of the environmental chemistry of technetium, by James Allen Gawenis
Aspects of the environmental chemistry of technetium, by James Allen Gawenis
Resource Information
The item Aspects of the environmental chemistry of technetium, by James Allen Gawenis represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in University of Missouri Libraries.This item is available to borrow from 1 library branch.
Resource Information
The item Aspects of the environmental chemistry of technetium, by James Allen Gawenis represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in University of Missouri Libraries.
This item is available to borrow from 1 library branch.
- Summary
- Technetium-99 is a high yield daughter product from fission reactions. The chemistry of this isotope makes it an environmental contaminant that is difficult to remove. This dissertation describes three aspects regarding the chemistry of technetium and its chemical analog, rhenium. The second chapter discusses a new method of extracting anionic metals from water with supercritical fluid carbon dioxide. Efficient extraction of tetrabutylammonium perrhenate was performed with methanol modified supercritical fluid carbon dioxide. This extraction was performed without complexation of rhenium prior to extraction. The third chapter examines the use of host-guest chemistry to selectively remove pertechnetate from aqueous systems. A metallated cyclotriveratrylene-type host selectively removed pertechnetate from saline at high efficiency in the presence of similar anions. The fourth chapter describes the possible use of technetium, in various chemical complexes, as a tracer for hydrological flows. Technetium-99m pharmaceuticals were added to different soils and water types to determine their sorption characteristics. Pertechnetate was found to have the lowest sorption while the complexed pharmaceuticals showed mixed, but higher, sorption
- Language
- eng
- Label
- Aspects of the environmental chemistry of technetium
- Title
- Aspects of the environmental chemistry of technetium
- Statement of responsibility
- by James Allen Gawenis
- Language
- eng
- Summary
- Technetium-99 is a high yield daughter product from fission reactions. The chemistry of this isotope makes it an environmental contaminant that is difficult to remove. This dissertation describes three aspects regarding the chemistry of technetium and its chemical analog, rhenium. The second chapter discusses a new method of extracting anionic metals from water with supercritical fluid carbon dioxide. Efficient extraction of tetrabutylammonium perrhenate was performed with methanol modified supercritical fluid carbon dioxide. This extraction was performed without complexation of rhenium prior to extraction. The third chapter examines the use of host-guest chemistry to selectively remove pertechnetate from aqueous systems. A metallated cyclotriveratrylene-type host selectively removed pertechnetate from saline at high efficiency in the presence of similar anions. The fourth chapter describes the possible use of technetium, in various chemical complexes, as a tracer for hydrological flows. Technetium-99m pharmaceuticals were added to different soils and water types to determine their sorption characteristics. Pertechnetate was found to have the lowest sorption while the complexed pharmaceuticals showed mixed, but higher, sorption
- Additional physical form
- Also available on the Internet.
- Cataloging source
- MUU
- http://library.link/vocab/creatorDate
- 1972-
- http://library.link/vocab/creatorName
- Gawenis, James Allen
- Degree
- Ph. D.
- Dissertation year
- 2001.
- Government publication
- government publication of a state province territory dependency etc
- Granting institution
- University of Missouri-Columbia
- Illustrations
- illustrations
- Index
- no index present
- Literary form
- non fiction
- Nature of contents
-
- bibliography
- theses
- http://library.link/vocab/subjectName
-
- Technetium
- Water
- Rhenium
- Supercritical fluid extraction
- Water
- Target audience
- specialized
- Label
- Aspects of the environmental chemistry of technetium, by James Allen Gawenis
- Note
-
- Typescript
- Vita
- Bibliography note
- Includes bibliographical references
- Carrier category
- online resource
- Carrier category code
-
- cr
- Carrier MARC source
- rdacarrier
- Content category
- text
- Content type code
-
- txt
- Content type MARC source
- rdacontent
- Control code
- 48777038
- Dimensions
- 29 cm
- Dimensions
- unknown
- Extent
- x, 170 leaves
- Media category
- computer
- Media MARC source
- rdamedia
- Media type code
-
- c
- Other physical details
- illustrations (some color)
- Specific material designation
- remote
- Label
- Aspects of the environmental chemistry of technetium, by James Allen Gawenis
- Note
-
- Typescript
- Vita
- Bibliography note
- Includes bibliographical references
- Carrier category
- online resource
- Carrier category code
-
- cr
- Carrier MARC source
- rdacarrier
- Content category
- text
- Content type code
-
- txt
- Content type MARC source
- rdacontent
- Control code
- 48777038
- Dimensions
- 29 cm
- Dimensions
- unknown
- Extent
- x, 170 leaves
- Media category
- computer
- Media MARC source
- rdamedia
- Media type code
-
- c
- Other physical details
- illustrations (some color)
- Specific material designation
- remote
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<div class="citation" vocab="http://schema.org/"><i class="fa fa-external-link-square fa-fw"></i> Data from <span resource="http://link.library.missouri.edu/portal/Aspects-of-the-environmental-chemistry-of/TjNsPEWOlzA/" typeof="Book http://bibfra.me/vocab/lite/Item"><span property="name http://bibfra.me/vocab/lite/label"><a href="http://link.library.missouri.edu/portal/Aspects-of-the-environmental-chemistry-of/TjNsPEWOlzA/">Aspects of the environmental chemistry of technetium, by James Allen Gawenis</a></span> - <span property="potentialAction" typeOf="OrganizeAction"><span property="agent" typeof="LibrarySystem http://library.link/vocab/LibrarySystem" resource="http://link.library.missouri.edu/"><span property="name http://bibfra.me/vocab/lite/label"><a property="url" href="http://link.library.missouri.edu/">University of Missouri Libraries</a></span></span></span></span></div>
