About the accuracy of determining the concentration of dissolved oxygen in the waters of the sub-oxygen zone of the Black Sea

S.I. Kondratiev, V.V. Zima, S.A. Shutov, D.S. Lyulchak1

Marine Hydrophysical Institute of RAS, Sevastopol, Kapitanska St. 2, Russia

E-mail: skondratt@mail.ru, vvzima@list.ru, shutov_sa@mhi-ras.ru

1Black Sea Hydrophysical Polygon RAS, Katsiveli, Shuleikin St. 9, Yalta, Russia

E-mail: dashonok09@mail.ru

DOI: 10.33075/2220-5861-2017-3-19-26

UDC 551.46:262.5

Abstract:

   A comparison of the vertical profiles of dissolved oxygen obtained using the SBE 43 sensor with the results of the oxygen determination by the Winkler method in two expeditions of the Marine Hydrophysical Institute in the central part of the Black Sea (within the economic zone of Russia) in 2016 was made. Hydrochemical studies on the determination of low concentrations of dissolved oxygen in the sub-oxygen zone of the Black Sea, the membrane sensor can prove to be a reliable instrument that can be clearly defined position of the upper limit of this zone. Recommendations for further work with a sensor of this type in the Black Sea are given.

Keywords: dissolved oxygen, sub-oxygen zone, membrane sensor.

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