Abstract
The sorption of three groups of polar organic compounds capable of H bonding with inorganic soil surfaces (phenols, alcohols, and ketones) by three soils having different organic-carbon (OC) contents was compared with the sorption of nonpolar compounds by the same soils. Soil OC content and compound hydrophobicity were observed to be of value in predicting sorption coefficients for all groups of compounds except phenols. The higher OC soil (1.2% OC) exhibited a significant relationship between sorption coefficient and hydrophobicity for all compound classes; the very low OC soil (0.06% OC), however, exhibited a relatively weak relationship between sorption coefficient and hydrophobicity.
The data support the application of hydrophobicity-based predictions of soil/sediment sorption coefficients to compounds capable of weak H-bond interactions with mineral surfaces and soils of ≥0.1% OC.
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Southworth, G.R., Keller, J.L. Hydrophobic sorption of polar organics by low organic carbon soils. Water Air Soil Pollut 28, 239–248 (1986). https://doi.org/10.1007/BF00583490
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DOI: https://doi.org/10.1007/BF00583490