The Resource Sorption and desorption of chlorinated hydrocarbon pesticides by clay minerals, by Cheng Sun Liao, (electronic resource)

Sorption and desorption of chlorinated hydrocarbon pesticides by clay minerals, by Cheng Sun Liao, (electronic resource)

Label
Sorption and desorption of chlorinated hydrocarbon pesticides by clay minerals
Title
Sorption and desorption of chlorinated hydrocarbon pesticides by clay minerals
Statement of responsibility
by Cheng Sun Liao
Creator
Contributor
Sponsor
Subject
Genre
Language
eng
Summary
"This thesis describes the sorption and desorption of chlorinated hydrocarbon pesticides by clay minerals under laboratory controlled environmental systems. Particular emphasis was directed toward the investigation of the fundamental adsorption phenomena which occurred in selected pesticide-clay systems. the effects of certain environmental stresses, including pH, temperature and salt (NaCl) concentration of water, on the behavior of sorption and desorption were also studied. Pesticides selected for this study included DDT, dieldrin and heptachlor, and clay minerals employed were kaolinite, montmorillonite and illite. The adsorption rate and equilibrium were evaluated by batch techniques employing completely mixed systems while the effects of the environmental factors on the sorption and desorption were investigated with laboratory controlled aquatic models. Results obtained from this study disclosed that the chlorinated hydrocarbon pesticides were rapidly adsorbed by the experimental clay minerals; in most cases the adsorption equilibria were reached within two hours of reaction. After the pesticides had been adsorbed on the clays, desorption of the pesticides occurred only to a very small extent. It is believed that the uptake of the organochlorine insecticides by the clay minerals is a process of chemical adsorption which involves the formation of certain types of high strength bonding. The pH, temperature and salt (NaCl) concentration of water did not appear to exert significant effects on the sorption and desorption of the chlorinated hydrocarbon pesticides by the clay minerals"--Abstract, p. ii
Related
Cataloging source
UMR
http://library.link/vocab/creatorDate
1941-
http://library.link/vocab/creatorName
Liao, Cheng Sun
Degree
M.S.
Dissertation year
1969.
Granting institution
University of Missouri--Rolla
Illustrations
  • illustrations
  • photographs
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • theses
http://library.link/vocab/relatedWorkOrContributorName
United States
http://library.link/vocab/subjectName
  • Soil absorption and adsorption
  • Soils
  • Clay minerals
  • Hydrocarbons
Target audience
specialized
Label
Sorption and desorption of chlorinated hydrocarbon pesticides by clay minerals, by Cheng Sun Liao, (electronic resource)
Instantiates
Publication
Note
  • Vita
  • The entire thesis text is included in file
  • Title from title screen of thesis/dissertation PDF file (viewed March 27, 2013)
Bibliography note
Includes bibliographical references (pages 110-114)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
833162649
Dimensions
unknown
Extent
1 online resource (x, 147 pages)
Form of item
  • online
  • electronic
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations, photographs, digital, PDF file.
Specific material designation
remote
System control number
(OCoLC)833162649
System details
  • System requirements: Adobe Acrobat Reader; Internet browser
  • Mode of access: World Wide Web
Label
Sorption and desorption of chlorinated hydrocarbon pesticides by clay minerals, by Cheng Sun Liao, (electronic resource)
Publication
Note
  • Vita
  • The entire thesis text is included in file
  • Title from title screen of thesis/dissertation PDF file (viewed March 27, 2013)
Bibliography note
Includes bibliographical references (pages 110-114)
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Control code
833162649
Dimensions
unknown
Extent
1 online resource (x, 147 pages)
Form of item
  • online
  • electronic
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Other physical details
illustrations, photographs, digital, PDF file.
Specific material designation
remote
System control number
(OCoLC)833162649
System details
  • System requirements: Adobe Acrobat Reader; Internet browser
  • Mode of access: World Wide Web

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