Effects On Chemical Volatility

Background:

Risk assessment tiers are often defined by limits on quantity and concentration of a given chemical of interestion. Contributing factors such as Volatility are most often defined by Vapor pressure of the chemical (either as a pressurized liquid or desolved solute).

My question:

Should the tiering concentrations as most likely defined by volatility, take the following additional factors into account?

1) heat capacity as it relates to a pool spill gasing off or restricting itself due to a lack of heat. (does the vapor pressure innately take this into account?)

2) solvent - if the tiered concentration is <100% then how significant of an effect would the solvent specific solubility be as it relates to an industry tank spill. Would the same solvent with an arbitrary VP of 760 mm hg (1atm) essentially disperse at the same rate regardless if it were dissolved in water vs (acetone? or w/e). What about an arbitrary VP of 20 mm hg?

Thanks in advance,

C