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THE INVESTIGATION OF MERCURY REDOX CHEMISTRY IN NATURAL WATERS AND THE DEVELOPMENT OF A NEW METHOD FOR INCUBATION EXPERIMENTS

dc.contributor.advisorMason, Robert Pen_US
dc.contributor.authorWhalin, Lindsayen_US
dc.date.accessioned2005-08-03T14:27:01Z
dc.date.available2005-08-03T14:27:01Z
dc.date.issued2005-04-26en_US
dc.identifier.urihttp://hdl.handle.net/1903/2490
dc.description.abstractThe redox processes that control Hg speciation in natural waters are poorly understood and study results often disagree, primarily a consequence of varied and often flawed methodologies. An incubation method was developed utilizing PFA Teflon® bag reaction vessels to reduce sources of error, and additions of isotopically labeled Hg to quantify rate constants. With low measures of error and duplicate bag reproducibility, this method was applied via incubations of natural waters in ambient sunlight to test three theories; 1) Hg oxidation and reduction are photochemically mediated, 2) Hg reduction is correlated to [DOC], and 3) Hg oxidation is enhanced by halides. The former was proven through the detection of redox chemistry during daylight and its absence in the dark. Results indicate the importance of both redox processes in natural waters, but failed to prove the latter two theories, potentially due to greater than expected [DOC] in one experiment.en_US
dc.format.extent1634437 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleTHE INVESTIGATION OF MERCURY REDOX CHEMISTRY IN NATURAL WATERS AND THE DEVELOPMENT OF A NEW METHOD FOR INCUBATION EXPERIMENTSen_US
dc.typeThesisen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentMarine-Estuarine-Environmental Sciencesen_US
dc.subject.pqcontrolledGeochemistryen_US
dc.subject.pquncontrolledmercury en_US
dc.subject.pquncontrolledoxidation en_US
dc.subject.pquncontrolledreduction en_US
dc.subject.pquncontrolledisotope en_US
dc.subject.pquncontrolledwater en_US
dc.subject.pquncontrolledincubationen_US


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