中文摘要：

通过β-环糊精与天冬氨酸的反应合成了水溶性极好的天冬氨酸-β-环糊精（ACD）。运用分子荧光光谱仪和X射线光电子能谱仪分别研究了ACD对芴的包结作用和对镉（Cd）的配位作用，在此基础上研究了土壤对ACD的吸附行为以及ACD对土壤中芴和cd的分配行为影响。结果表明：合成的ACD具有β环糊精的空腔结构和天冬氨酸的羧基和氨基，具有比β-环糊精更好的水溶性，土壤对其的最大吸附量为21．49mg／g；在40g／L的ACD作用下，土壤中芴和Cd的分配系数（Kd）分别降到了2．19、3．56L／kg。因此，ACD通过对芴等有机物发生包结作用，对cd等重金属发生配位作用使污染物从土壤固相中解吸，溶解到液相中，从而起到土壤修复的作用。

英文摘要：

Aspartic acid-β-cyclodextrin （ACD） with high water solubility was synthesized by β-cyclodextrin and aspartic acid. Fluorescent emission spectroscopy and X-ray photoelectron spectroscopy were used to study the reaction of ACD with fluorene and cadmium （Cd）. The adsorption behavior of soil on ACD and the distribution behavior of flu- orene and Cd in soil influenced by ACD were investigated. Results showed that ACD had cavity structures,amino and carhoxyl groups. The maximum adsorption quantity of soil on ACD was 21.49 mg/g,indicating high water solubility. Under the condition of 40 g/L ACD,the distribution coefficients of fluorene and Cd were 2.19 and 3.56 L/kg,respec- tively. Conclusionly,fluorene and Cd could be transferred from solid phase to liquid phase influenced by ACD. There- fore,ACD could be used to repair soil pollution.