Carbon nanotubes (CNTs) are excellent sorbents with unique properties that have allowed them to be used for sample preparations in chemical analysis as well as chromatographic separations. They show high specific sorption capacity even for low molecular weight compounds such as CO₂ and methane, and at the same time, their nonporous structures provide faster mass transfer which allows efficient desorption of large molecules from their surface. Therefore, CNTs have been used as sorbents for small as well as macromolecules. This review highlights the applications of CNTs and CNT-based materials in some important analytical scale separations, namely stationary phase in gas, liquid and electro chromatography, sorbents for gas phase preconcentration, solid phase extraction, solid phase micro extraction and membrane separations.

碳纳米管（CNTs）是具有出色性能的出色吸附剂，已使其可以用于化学分析和色谱分离中的样品制备。它们甚至对低分子量化合物（例如CO _2）也显示出高的比吸附能力。甲烷和甲烷，同时，它们的无孔结构提供了更快的质量传递，从而使大分子能够有效地从其表面脱附。因此，CNT已被用作小分子和大分子的吸附剂。这篇综述重点介绍了碳纳米管和碳纳米管基材料在一些重要的分析规模分离中的应用，即气相，液相和电色谱中的固定相，用于气相预浓缩的吸附剂，固相萃取，固相微萃取和膜分离。