金属有机骨架复合材料在样品预处理中的研究进展

金属有机骨架（MOFs）材料是近几年涌现出的一类新型多功能多孔材料，以金属离子或金属簇为配位中心，与含氧或氮的有机配体通过配位作用形成多孔骨架结构。相比于其他传统无机多孔材料，MOFs具有比表面积高、孔隙率大、热稳定性好和结构与功能多样化的特点，因而被广泛用于气体存储、催化、吸附和分离等领域。MOFs复合材料在样品预处理方面的应用引起了研究者们的极大兴趣和广泛关注。由于MOFs材料和不同功能材料如高分子聚合物、碳基材料以及磁性材料组装复合，使MOFs复合材料的性能优于原来的MOFs材料。综述了近年MOFs复合材料在样品预处理的研究应用，尤其是在固相微萃取、固相萃取以及磁性固相萃取等方面的应用。

Development of metal-organic framework composites in sample pretreatment

In recent years, a new type of multi-functional porous material, metal-organic frameworks (MOFs), is emerging. MOFs are formed by coordination of metal ions or metal clusters with oxygen or nitrogen and contain organic ligands porous skeleton structure. Compared with other traditional inorganic porous materials, MOFs have many advantages such as high specific surface area, large porosity, good thermal stability and diversified structure and function. They are widely used in the fields of gas storage, catalysis, adsorption and separation. In recent years, the applications of MOF composites in sample pretreatment have aroused great interest and widespread concern. Due to the assembly of MOFs and different functional materials, such as polymers, carbon-based materials and magnetic materials, the performance of MOF composites are better than the original MOFs. This review summarizes the applications of MOF composites in sample pretreatment technique in recent years, focuses on the applications of MOFs composites in solid phase microextraction (SPME), solid phase extraction (SPE) and magnetic solid phase extraction (MSPE).