Automated oxygen titration and salinity determination
Knapp, George P.
Stalcup, Marvel C.
Stanley, Robert J.
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This report describes a newly developed automated Winkler titration system for dissolved oxygen in seawater which is presently in use at the Woods Hole Oceanographic Institution. This amperometric, calculated endpoint system was compared with two different automated and one manual Winkler method during a recent cruise. The four different methods agreed to within about 0.04 ml/l. The system described here measures the titrant needed to reach the endpoint with a resolution better than 0.001 ml. The standard deviation of replicate samples is 0.005 ml/l and the accuracy is about 0.02 ml/l. A technique to automatically acquire conductivity ratio measurements and calculate salinity using a Guildline Autosal Salinometer is also describe.
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Knapp, George P.; Stalcup, Marvel C.; Stanley, Robert J. (Woods Hole Oceanographic Institution, 1990-08)This report describes a newly developed automated Winkler titration system for dissolved oxygen in seawater which is presently in use at the Woods Hole Oceanographic Institution. This amperometric, calculated, endpoint ...
Effects of nutrients, salinity, pH and light:dark cycle on the production of reactive oxygen species in the alga Chattonella marina Liu, Wenhua; Au, Doris W. T.; Anderson, Donald M.; Lam, Paul K. S.; Wu, Rudolf S. S. (2007-06-03)Experiments were carried out to investigate the effects of nutrients, salinity, pH and light:dark cycle on growth rate and production of reactive oxygen species (ROS) by Chattonella marina, a harmful algal bloom (HAB) ...
Joyce, Terrence M.; Bacon, Sheldon; Kalashnikov, Pave; Romanov, Alexander; Stalcup, Marvel C.; Zaburdaev, Vladimir (WOCE Hydrographic Programme Offce, Woods Hole Oceanographic Institution, 1992-07)This report summarizes the work, under the auspices of the WOCE Hydrographic Programme (WHP), which took place on the R/V Akademik Vernadsky in June-July 1991. The goal of the exercise was an international comparison/training ...