Abstract
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).
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