A straightforward treatment of activity in aqueous CaCO3 solutions and the consequences for nucleation theory.
basic_science · Level V
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- Record sourced from PubMed, PMID 24306996.
- Also identified by DOI 10.1002/adma.201303643.
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Abstract
The aqueous calcium carbonate system is rigorously investigated with respect to ionic activity. Ideal treatment is found to be a good approximation at relevant concentrations. The data further show that bound CaCO3 species cannot be regarded as "inactive" during nucleation but rather appear to play a key role in the phase-separation process, and that amorphous calcium carbonate (ACC) can be precipitated from much lower levels of supersaturation than previously believed.