The effect of pressure on the chemical potentials of seawater components,on ionic species in seawater,and on calcite saturation levels期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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The effect of pressure on the chemical potentials of seawater components,on ionic species in seawater,and on calcite saturation levels

Authors:	JV Leyendekkers

Institution:	Department of Physical Chemistry, University of Sydney, Sydney, N.S.W. Australia

Abstract:	The activities of most of the major seawater components at 1,001 bars have been estimated, and values for the ions deduced. Equations giving the effect of pressure on the activities of ionic species in seawater ( $S = 35‰$ ) have been developed. The species covered are: NaSO₄^?, MgSO₄⁰, CaSO₄⁰, H⁺, the free base (NH₃), the HCO₃^?/CO₃² activity ratio and the ion activity product of calcium carbonate. Comparison of the latter with the “ideal” solubility of calcite (pure solid in equilibrium with a mixed electrolyte solution) indicates a degree of saturation compatible with the trends indicated by in situ measurements.

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