项目旨在制备纳米或亚微米磁性介孔碳材料吸附剂，探索其在大体积复杂基体环境水样中微量有机污染物分析中的应用。用沉淀法或微乳液法合成合适粒径的纳米磁性氧化铁粒子，以其为核心分别采用软模板、介孔硅胶硬模板、层状铝锌双金属氢氧化物硬模板、天然/合成聚合物直接水热聚合-高温碳化等方法制备纳米或亚微米磁性介孔碳材料吸附剂；考察该吸附剂对有机污染物的萃取性能，建立环境水样高效固相萃取方法，与各种色谱-质谱检测技术联用，实现对复杂基体环境水样中微量污染物的高效、灵敏、快速分析。项目创造性地将纳米/介孔材料、新型碳材料、磁性材料和固相萃取等技术结合为一体，制得全新的吸附富集材料，它们既具有很大的比表面积、强萃取能力、高富集倍数和快的萃取速度，可方便地进行萃取操作和磁性固-液分离，还可根据碳材料的介孔孔径、极性和石墨化程度等赋予其针对天然有机质等大分子的体积排阻功能。

This project focuses on the synthesis of nano-meter or submicro-meter scaled magnetic mesoporous carbon adsorbents and their application in the analysis of trace organic pollutants in large volume of environmental water samples with complex matrix. First, iron oxide magnetic nanoparticles (NPs) with appropriate size will be prepared through coprecipitation or microemulsion method. Next, the as-prepared iron oxide magnetic NPs, which are used as core, will be coated with a natural or synthetic polymer shell through a directly hydrothermal method with surfactant as soft template, or mesoporous silica or Al-Zn layered double hydroxides as hard template. Finally, the nano-meter or submicro-meter scaled magnetic mesoporous carbon adsorbents can be obtained by carbonization of the mesoporous polymer shell after removal of the soft or hard template. The extraction performance of the prepared magnetic mesoporous carbon adsorbents to organic pollutants will be investigated and an efficient magnetic solid-phase extraction (SPE) method will be established to achieve the sensitive and rapid analysis of trace pollutants in complex environmental water samples in conjunction with various chromatography-mass spectrometry detection technologies. In this project, novel adsorbent materials can be prepared through creative combination of nano-meter or submicro-meter mesoporous material, new type carbon material, magnetic material and SPE technology. The adsorbents possess large surface area, high extraction performance and concentration factor and can be isolated from water solution conveniently after adsorption due to the superparamagnetic property. Furthermore, size exclusion to the macromolecules of natural organic matters can be obtained by regulating the pore size, polarity and the degree of graphitization of the mesoporous carbon shell.