Nonionic surfactant at aqueous-phase concentrations less than the CMC can affect the distribution of hydrophobic organic compounds (HOCs) in soil/aqueous systems. Sub-CMC levels of nonionic surfactant can enhance the apparent aqueous-phase HOC solubility, increase the soil organic carbon content due to surfactant sorption, and modify the value of the HOC soil/aqueous distribution coefficient. Experimental data quantifying these effects are presented for several HOCs and nonionic surfactants. A method is proposed for predicting the distribution of HOC between soil and bulk solution with sub-CMC aqueous-phase concentrations of nonionic surfactant.
Research Article|July 01 1992
Interactions Between Nonionic Surfactant Monomers, Hydrophobic Organic Compounds and Soil
Water Sci Technol (1992) 26 (1-2): 147-158.
D. A. Edwards, Z. Liu, R. G. Luthy; Interactions Between Nonionic Surfactant Monomers, Hydrophobic Organic Compounds and Soil. Water Sci Technol 1 July 1992; 26 (1-2): 147–158. doi: https://doi.org/10.2166/wst.1992.0395
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