Automated oxygen titration and salinity determination
1990
Knapp, George P. | Stalcup, Marvel C. | Stanley, Robert J.
This report describes a newly developed automated Winkler titration system for dissolved oxygen in seawater which is presently inuse at the Woods Hole Oceanographic Institution. This amperometric, calculated endpoint system was compared with twodifferent automated and one manual Winkler method during a recent cruise. The four different methods agreed to within about 0.04ml/l. The system described here measures the titrant needed to reach the endpoint with a resolution better than 0.001 ml. Thestandard deviation of replicate samples is 0.005 ml/l and the accuracy is about 0.02 ml/l. A technique to automatically acquireconductivity ratio measurements and calculate salinity using a Guildline Autosal Salinometer is also describe.
Afficher plus [+] Moins [-]Funding was provided by the National Science Foundationthrough Grant No. OCE88-22542.
Afficher plus [+] Moins [-]Mots clés AGROVOC
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