Departamento de Química Analítica, Nutrición y Bromatología, Facultad de Química, Universidad de La Laguna (ULL), Avenida Astrofísico Francisco Sánchez s/n°, 38206 La Laguna (Tenerife), Spain.
Servicio General de Apoyo a la Investigación (SEGAI), Universidad de La Laguna (ULL), Avenida Astrofísico Francisco Sánchez s/n°, 38206 La Laguna (Tenerife), Spain.
J Chromatogr A. 2014 Aug 29;1357:110-46. doi: 10.1016/j.chroma.2014.05.035. Epub 2014 May 17.
Carbon nanotubes (CNTs) are still awakening scientists' interest because of their inherent properties as well as their applications in a wide variety of fields. Regarding Analytical Chemistry, and although they have also been used as stationary phases in chromatography or pseudostationary phases in capillary electrophoresis, they have also found a particular place in sorbent-based extraction techniques. In fact, they are currently used as sorbents in solid-phase extraction, solid-phase microextraction, stir-bar sorptive extraction and matrix solid-phase dispersion, for analyte enrichment or storage, sample fractionation or clean-up as well as support for derivatization reactions. CNT surface is tuneable and, as a result, they can be suitably functionalized, aggregated or linked to other supports which increase their potential use as sorbents. They can also be arranged under different formats (cartridges, fibers, stir bars, disks, etc.) or even combined with magnetic nanoparticles, which clearly enlarge their applications. This review article overviews the most recent applications of CNTs as sorbent materials, covering the period from 2010 to early 2014.
碳纳米管（CNTs）由于其固有性质及其在各种领域的应用，仍然引起了科学家的兴趣。就分析化学而言，尽管它们也已被用作色谱中的固定相或毛细管电泳中的伪固定相，但它们在基于吸附剂的萃取技术中也找到了特殊的位置。事实上，它们目前已被用作固相萃取、固相微萃取、搅拌棒吸附萃取和基质固相分散中的吸附剂，用于分析物的富集或储存、样品的分级或净化以及衍生化反应的支持。CNT 表面是可调的，因此可以对其进行适当的功能化、聚集或与其他载体结合，从而增加其作为吸附剂的潜在用途。它们还可以以不同的形式排列（如小柱、纤维、搅拌棒、圆盘等），甚至可以与磁性纳米粒子结合，这显然扩大了它们的应用范围。本文综述了 2010 年至 2014 年初 CNTs 作为吸附材料的最新应用。
