Graphene is an atomically thin honeycomb lattice of carbon atoms. It comprises a single layer of SP2-hybridized carbon atoms arrange in six-membered rings. As a new carbon-based nanoma-terial after carbon nanotube, graphene could be considered as one of the ideal absorption materials with superior chemical stability, thermal stability and high specific surface area. Graphene oxide (GO) possesses rich oxygen-contained groups on its surface. Most of the graphene used nowadays is produced from the reduction of graphene oxide. In recent years, GO and graphene have been applied in the separation and enrichment of organic compounds, mental ions and biological molecules. In this paper, the preparation methods of GO and graphene and their applications in sample pretreatment techniques such as solid-phase extraction (SPE) , solid-phase microextration ( SPME ) , magnetic solid-phase extraction( MSPE) , stir bar sorptive extraction( SBSE) were reviewed.%石墨烯是继碳纳米管之后出现的新一代碳同素异形体,是碳原子以SP2杂化轨道组成的具有六角形蜂巢晶格结构的二维纳米材料,具有良好的化学稳定性、热稳定性和高比表面积.氧化石墨是用强氧化剂氧化鳞片石墨而获得的石墨衍生物,同样是一层状共价化合物,其表面有丰富的含氧宫能团.近年来,氧化石墨和石墨烯在有机小分子、金属离子和生物大分子分离富集方面的应用已有文献报道.该文简要介绍了氧化石墨以及石墨烯的制备方法,并详细概述了其在固相萃取、固相微萃取、磁性固相萃取、搅拌棒吸附萃取等样品前处理技术中的应用.
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