Yang Jiangang, Liu Xiang, Yu Gang, Long Tao, She Peng, Liu Zheng
Dept. of Environmental Sciences and Engineering, Tsinghua University, Beijing 100084, China.
Huan Jing Ke Xue. 2003 Nov;24(6):79-82.
Using three typical nonionic surfactants (Tween80, Tween20 and Triton X-100), the solubilization of four kinds of polycyclic aromatic hydrocarbons (PAHs) e.g. naphthalene, phenanthrene, fluorene and pyrene, were characterized. It was found that not only nonionic surfactants could enhance the solubilization of PAHs greatly in the range of concentration above critical micellar concentration (CMC), but also the solubility had the linear relationship with the concentration of nonionic surfactants. The effect of solubilization enhancement at three surfactants was Triton X-100 > Tween80 > Tween20. In the three nonionic surfactants solution the micelle-aqueous phase partitioning coefficient (K(m)) had very good linear proportional to the octanol-water partitioning coefficient (Kow) for the four tested PAHs.
使用三种典型的非离子表面活性剂（吐温80、吐温20和曲拉通X-100），对四种多环芳烃（PAHs），即萘、菲、芴和芘的增溶作用进行了表征。结果发现，不仅非离子表面活性剂在高于临界胶束浓度（CMC）的浓度范围内能极大地增强PAHs的增溶作用，而且溶解度与非离子表面活性剂的浓度呈线性关系。三种表面活性剂的增溶增强效果为曲拉通X-100>吐温80>吐温20。在三种非离子表面活性剂溶液中，四种受试PAHs的胶束-水相分配系数（K(m)）与正辛醇-水分配系数（Kow）具有非常良好的线性比例关系。
