A new method for the determination of Henry's law constants (air-water-partition coefficients)

摘要

We set out a method for the determination of Henry's Law constants or air-water-partition coefficients at 298.15 K that does not require a knowledge of either the vapor pressure or the aqueous solubility of a compound, but is derived from experimental solubilities in non-aqueous solvents, or from experimental water-solvent partition coefficients. The method is applicable to a wide range of compound, from volatile organic compounds to very hydrophobic compounds with low vapor pressures and low aqueous solubilities. Using equations that we have developed previously, our obtained air-water partition coefficients at 298.15 K can be corrected to any temperature between 273 K and 573 K. (C) 2019 Elsevier B.V. All rights reserved.