Pollutant Sorption to Soils and Sediments in Organic/Aqueous Solvent Systems

摘要

The solubility and sorption properties of aromatic solutes in aqueous systems containing polar organic solvents were investigated. The work addressed the situation in which the release of hydrophobic organic contaminants as a result of a spill or accidental discharge may be accompanied by the release of water-soluble organic solvents. The investigation examined the effects of a polar solvent in water on the solubility of relatively hydrophobic solutes and the effect of polar solvent-water mixtures on sorption of organic solutes onto soil. The results are interpreted by means of chemical thermodynamic models to predict solubility in water/solvent systems and by semi-empirical models to correlate reduction in sorption characteristics with increase in solubility.