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it fJ� <br /> if <br /> i <br /> SOIL VAPOR MIGRATION SECTION 2 <br /> I. <br /> 1.4 VOLATILIZATION FROM AQUEOUS SOLUTIONS' <br /> I <br /> Henry's Law describes equilibrium partitioning between water and vapors. <br /> C„ = H, Ca, where: <br /> I I <br /> C„ = concentration of constituent in. air <br /> Ca, = concentration of constituent in water <br /> H; = Henry's Law constant, dimensionless <br /> I} ' <br /> H; is a function of the constituent, temperature,and the water quality. The LARGER the value <br /> of H;, the GREATER the tendency for the contaminant to partition.;out of the aqueous phase and <br /> into the vapor phase (i.e., more of that constituent will appear in the vapor phase). <br /> Table 2-4, Dimensionless Henry's Law Constants for typical organic compounds <br /> Table 2-5,, Henry's Law Constants for Gasoline Constituents <br /> R !j� <br /> I� <br /> I <br /> I� <br /> I <br /> f <br /> l <br /> if <br /> I� { <br /> I Ih <br /> it <br /> i� <br /> SOIL VAPOR SURVEY 2-19 October 22, 1990 <br /> II!I <br /> it <br /> I <br /> i <br /> I <br />