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Due to the greater thermodynamic stability of CaCO 3 relative to Li 2 CO 3 , synthetic CaCO 3 was precipitated from artificial seawater by the release of CO 32− from Li 2 CO 3 and Ca 2+ under different pH conditions. The pH of the solution was controlled by slowly bubbling high-purity NH 3 or CO 2 gas at 25±0.5°C,...
Experiments of boron incorporated into Mg(OH)2 from magnesium-free synthetic seawater were carried out at various pH values, in order to investigate the adsorption species and the variation of isotopic fractionation of boron on Mg(OH)2. The results showed that the incorporation of boron into Mg(OH)2 was very rapid and reached the equilibrium after 4 h. The [B]s and the partition coefficient Kd between...
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