Comment on "Unraveling the 'Pressure Effect' in Nucleation"
  In a 2008 Letter, Wedekind et al. discussed the influence of an inert carrier gas on the vapor-liquid nucleation rate. They found an additional "pressure-volume work" that is performed against the carrier gas, and also quantified the nonisothermal effects arising from the carrier gas. We argue that the pressure-volume work term represents the influence of the carrier gas on phase equilibrium itself. This term will not appear explicitly when a definition of the supersaturation is used that is appropriate for high-pressure nucleation. 
Vincent Holten, J. Hrub\'y, M. E. H. van Dongen, and D. M. J.   Smeulders
cond-mat.stat-mech physics.chem-ph