The solubility of aragonite in seawater at 25.0°C and 32.62‰ salinity |
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Authors: | David C Plath Ricardo M Pytkowicz |
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Institution: | School of Oceanography, Oregon State University, Corvallis, OR 97331 U.S.A. |
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Abstract: | The apparent solubility product of aragonite in 32‰ seawater at 25.0°C is reported as K′sp = (0.869±0.049) × 10?6(mol2kgseawater?2) thus confirming the value of R.A. Berner, 1976 (Am. J. Sci., 276: 713–730). The apparent solubility product ratio for aragonite and calcite is reported as The deviation of this value from the thermodynamic ratio is atttributed to the formation of a stable low Mg-calcite coating on pure calcite in seawater measurements of solubility. |
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