持久性有机物污染土壤很难自然恢复，目前仍缺乏有效的修复方法，使其成为环境安全和人体健康潜在巨大威胁。课题耦合印迹聚合物（IPs）的吸附选择性和纳米零价铁（NZVI）的化学脱氯性，制备靶向纳米铁复合材料（TNZVI），并考察其对典型持久性有机物多氯联苯（PCBs）污染土壤的修复效能及机理。课题以IPs赋予NZVI靶向性，以NZVI再生IPs吸附空穴，改善两者单独应用于土壤修复中的不足，通过优势互补，强化土壤中PCBs的去除。课题研究TNZVI的制备，考察水作和旱作下其PCBs污染土壤修复效能；探讨土壤系统中PCBs在土壤固相、土壤溶液和复合材料三者间的传递、转移及降解规律，揭示PCBs污染土壤的TNZVI修复机理。研究结果可为TNZVI修复PCBs污染土壤提供理论基础，为印迹和纳米技术联合修复其它污染土壤提供新思路；在促进印迹技术与纳米技术的融合，拓展污染土壤修复方法方面科学意义显著。

The soil polluted by the persistent organics is hard to recover naturally and the lack of remediation methods makes it posing a great risk to the environment safety and human health. Coupled the selective adsorption of the imprinted polymers (IPs) with the chemical dechlorination of nano zero valent iron (NZVI), the composite materials of targeted nano zero valent iron (TNZVI) were prepared. And it remediation efficiency and mechanism for the soil polluted by one kind of topical persistent organic polychlorinated biphenyls (PCBs) were researched. The selectivity of the IPs is introduced to achieve the orientation adsorption targeting PCBs in the soil; the dechlorination of the NZVI is introduced to release the PCBs adsorption caves and then regenerate the selective adsorption performance of IPs. By the fusion, the application limitations of individual imprinting technique and nanotechnology in the remediation of contaminated soil would be broken through, and the complementary advantage would strengthen the removal of PCBs in the soil. In this study, the TNZVI composites were prepared and its remediation efficiency for the PCBs contaminated soil is investigated on condition of water-cultivation and dry farming; the rules of PCBs transfer and degradation among the soil solid phase, solution and composites in the soil system were discussed; and then the remediation mechanism of PCBs contaminated soil by TNZVI was revealed. The results can form the theoretical basis for the efficient remediation of PCBs contaminated soil; can provide a new method of the combination remediation for other persistent organics polluted soil as well. This not only benefits to the integration of imprinting technique and nano technology but also has great scientific significance on the expansion of remediation method for the contaminated soil.