Recent Advances of Functionalized COFs-based Sample Pretreatment Methods in Emerging Contaminants
Emerging contaminants(ECs)have attracted much attention in many countries because of their environmental persistence,bioaccumulation,biotoxicity and trace amounts in the environ-ment.Therefore,the highly sensitive detection of ECs in environmental,food,and biological samples is essential.The traditional sample pretreatment technology still exists shortcomings such as consuming time,large amount of adsorbent and the poor analysis accuracy of unstable pollutants.Hence,it is urgent to develop and design new materials with high selectivity and high mass transfer efficiency as adsorbent of pretreatment technology to achieve the highly selective and sensitive detec-tion of ECs.Covalent organic frameworks(COFs),especially its functionalized COFs materials,are widely used for the detection of ECs due to their advantages of the large specific surface area,design-able structure,stability and abundant building elements.Based on this,the synthetic strategies of functionalized COFs materials and their applications as adsorbents of sample pretreatment for the analysis of ECs in environmental,food and biological samples were reviewed in this paper.Finally,the development tendency of such materials in the future were prospected.
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