Hydrobiologia

, Volume 632, Issue 1, pp 157–165 | Cite as

Oxygen solubility in evaporated seawater as a function of temperature and salinity

Primary research paper
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Abstract

Most studies of oxygen solubility values for high salinity conditions have used synthetic solutions. The object of this study is therefore to propose an equation, valid for high salinity conditions, based on the analysis of oxygen saturation in evaporated seawater. In this study, the solubility of oxygen in evaporated seawater has been determined over a temperature range of 8–35°C and with salinity values of up to 133‰. Based on experimental data, an equation is proposed that introduces a S 2 (salinity) term, at 1 atm pressure, giving increased importance to salinity. The equation provides a valid means of predicting the amount of dissolved oxygen in this range of temperatures and salinities. In addition, for high salinity conditions, with this equation there is no need to extrapolate other established equations, which are less accurate at salinities higher than 40‰. The use of the proposed equation offers a more precise way of calculating oxygen solubility in seawater at high salinity values (up to 133‰), and small deviations from experimental values, of the order of 2 μmol kg−1, are obtained.

Keywords

Evaporated seawater Dissolved oxygen Salinity Gas solubility 
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Notes

Acknowledgments

This work was supported by the Spanish CICYT (Spanish Commission for Research and Development) of the Ministerio de Educación y Ciencia under contract PTR1995-0971-OP-02. The authors would like to thank Barbara and Peter Debelius for their help with the English revision.

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Departamento de Química-Física, Facultad de Ciencias del Mar y AmbientalesUniversidad de CádizPuerto RealSpain

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