文档介绍：Pergamon Chemosphere, Vol. 37, No. I, pp. 1299-1305, 1998
s. solubilization, P-cyclodextrin, carboxymethyl-B-cyclodextrin, PAHs
Polycyclic aromatic hydrocarbon(PAHs) are poorly soluble, hydrophobic organic compounds that have been
released to the environment on a large scale. They are distributed in air, water, and soil. Because many PAHs are
carcinogens, their presence in the environment is undesirable. Especially PAHs in soil, which can be accumulated
and transport into agricultural plants, may cause raised PAH contents in grains.
The cleanup of soil contaminated by low polarity organic compounds usually use the method of solubilization of
cosolvents or surfactants, which can improve the transport speed of contaminants from soil into the water
phase.“-*’ However, each of these methods has its drawbacks. The solubilization of cosolvents is usually not
significant until their volume-fraction concentrations are above 10%; and surfactants may form high viscosity
emulsions that are difficult to remove. It has been reported that cyclodextrins may be considered as alternative
solubilization reagents for soil cleanup. Hydroxypropyl-B-cyclodextrin can enhance the water solubility of several
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