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. / Graduation date: 1968
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/28110 |
| Date | 09 May 1968 |
| Creators | Bradford, Wesley L. |
| Contributors | Park, Kilho |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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