Mathematics – Logic
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gecoa..57.2223r&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 57, Issue 10, pp.2223-2226
Mathematics
Logic
Scientific paper
Buffering of intensive thermodynamic variables in geological systems differs from the classical buffering in aqueous solutions. Whereas buffering in aqueous solutions is controlled by homogeneous equilibria, heterogeneous equilibria between several phases, which are often complex solutions themselves, control the intensive thermodynamic properties of geological systems. A necessary part of the definition of a buffer is the buffering capacity, which defines the rate of change in chemical potential of mobile components, as a consequence of their addition to or removal from the system. The rate of change of intensive parameters in open polyphase systems can be related to the abundances and compositions of reacting phases. A buffer can be characterized by a constant " " which defines the proportionality between additions and losses of a given component and the change in its chemical potential.
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