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dc.contributor.authorMyer, Mark Harrison
dc.date.accessioned2016-02-26T05:30:27Z
dc.date.available2016-02-26T05:30:27Z
dc.date.issued2015-08
dc.identifier.othermyer_mark_h_201508_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/myer_mark_h_201508_ms
dc.identifier.urihttp://hdl.handle.net/10724/34477
dc.description.abstractThe effects of multi-walled carbon nanotube addition to sediment on the toxicity of diphenhydramine were investigated using invertebrate and fish models. Sediment elutriate exposures were undertaken with the freshwater crustacean Ceriodaphnia dubia to compare the toxic effects of diphenhydramine in the presence and absence of sediment and multi-walled carbon nanotubes. In both sediment and solution-only treatments, addition of 0.318 mg/g of functionalized multi-walled carbon nanotubes significantly decreased overall 48-hour mortality relative to the positive control. In a subsequent study, juvenile fathead minnows (P. promelas) were exposed to sublethal concentrations of diphenhydramine in the presence of natural sediment, with some treatments receiving MWCNTs. Addition of MWCNTs did not have a protective effect upon DPH-related growth inhibition, and did not reduce the whole-body burden of DPH in exposed fish. Mass-balance calculations indicated that significant amounts of DPH were adsorbed to MWCNTs, and DPH concentrations in water and sediment were commensurately reduced.
dc.languageeng
dc.publisheruga
dc.rightsOn Campus Only Until 2017-08-01
dc.subjectMulti-walled carbon nanotubes
dc.subjecttoxicity
dc.subjectdiphenhydramine
dc.subjectbioaccumulation
dc.subjectbioconcentration
dc.subjectadsorption
dc.subjectdesorption
dc.subjectsediment
dc.subjectfathead minnows
dc.subjectCeriodaphnia dubia
dc.subjectMWCNT
dc.subjectCNT
dc.titleEffects of multi walled carbon nanotubes and sediment on the toxicity and bioavailability of diphenhydramine
dc.typeThesis
dc.description.degreeMS
dc.description.departmentEnvironmental Health Science
dc.description.majorEnvironmental Health
dc.description.advisorMarsha Black
dc.description.committeeMarsha Black
dc.description.committeeKun Lu
dc.description.committeeRobert B. Bringolf


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