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IN SITU MEASUREMENT OF SULFIDE IN NATURAL WATERS

dc.contributor.advisorMason, Robert Pen_US
dc.contributor.authorRearick, Michaelen_US
dc.date.accessioned2004-08-27T05:38:13Z
dc.date.available2004-08-27T05:38:13Z
dc.date.issued2004-08-10en_US
dc.identifier.urihttp://hdl.handle.net/1903/1830
dc.description.abstractDissimilative sulfate reduction is a major source of sulfide in sediments and the water column of lakes and estuaries. Resulting dissolved sulfide can be incorporated into organic or inorganic sulfur complexes. When present in aquatic systems, sulfide is the dominant ligand for many trace metals and may control metal bioavailability to organisms. Laboratory tests were performed to validate the coupling of the diffusive gradient in thin films technique to a solid-state ion selective electrode to quantify in situ sulfide concentrations. Diffusive gradient in thin films probes were deployed in three lakes and estuary pore water and compared with parallel sulfide measurements using the Cline method and potentiometry. Differences between the recently validated method and the other methods were found with the former resulting in lower concentrations. Laboratory experiments examined these differences, and the experimental results identified measurement artifacts associated with sulfide antioxidant buffer usage.en_US
dc.format.extent841682 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleIN SITU MEASUREMENT OF SULFIDE IN NATURAL WATERSen_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.pqcontrolledEnvironmental Sciencesen_US
dc.subject.pqcontrolledChemistry, Analyticalen_US
dc.subject.pqcontrolledBiogeochemistryen_US


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