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Calcium analysis in seawater by an ion sensitive electrode

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dc.contributor.advisor Park, Kilho
dc.creator Bradford, Wesley L.
dc.date.accessioned 2012-03-01T17:09:06Z
dc.date.available 2012-03-01T17:09:06Z
dc.date.copyright 1968-05-09
dc.date.issued 1968-05-09
dc.identifier.uri http://hdl.handle.net/1957/28110
dc.description Graduation date: 1968 en_US
dc.description.abstract A newly developed calcium sensitive liquid-liquid membrane electrode is used to analyse seawater off the Oregon coast in waters fed by the Columbia River runoff. For the analysis, an application of the method of standard additions is used requiring the assumption that the seawater is of so high a salt concentration that a small change in the overall ionic strength is insufficient to disturb the electrode response to calcium. Two equations describing the behavior of the electrode are treated and one is found applicable for use in seawater. Analyses by electrode are compared with analyses of the same water by atomic absorption spectroscopy with a degree of scatter in the correlation which is largely accounted for by 10% of calcium accuracy in the electrode readout device. Overall laboratory precision of the electrode and readout was 3% of calcium per standard deviation. The electrode appears to be much better for analytical purposes than ± 10% of calcium concentration. en_US
dc.language.iso en_US en_US
dc.subject.lcsh Seawater -- Composition en_US
dc.subject.lcsh Calcium en_US
dc.title Calcium analysis in seawater by an ion sensitive electrode en_US
dc.type Thesis/Dissertation en_US
dc.degree.name Master of Science (M.S.) in Oceanography en_US
dc.degree.level Master's en_US
dc.degree.discipline Oceanic and Atmospheric Sciences en_US
dc.degree.grantor Oregon State University en_US
dc.description.digitization File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR. en_US
dc.description.peerreview no en_us

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