Characterization of the Partitioning of Gaseous Solutes Into Humic Acid with the Abraham Model and Temperature‐Independent Equation Coefficients

Abstract

Abstract Published gas‐to‐Leonardite humic acid partition coefficient data, measured at a relative humidity of 98% and at 278.15, 288.15, 298.15, 308.15, and 318.15 K, were correlated with the Abraham solvation parameter model. The five derived temperature‐specific correlations described the observed partition coefficient data to within an overall standard deviation of 0.33 log units. A method was devised for combining experimental partition coefficients measured at different temperatures into a single regression correlation. The proposed method described the 664 experimental partition coefficients, which covered the 278.15–348.15 K temperature interval, to within a standard deviation of 0.33 log units.