• 文献标题:   In-syringe extraction using compressible and self-recoverable, amphiphilic graphene aerogel as sorbent for determination of phenols
  • 文献类型:   Article
  • 作  者:   TANG S, SUN J, XIA DS, ZANG B, GAO YH, CHEN CX, SHEN W, LEE HK
  • 作者关键词:   graphene aerogel, compressibility, selfrecoverability, controllable amphiphilicity, phenol
  • 出版物名称:   TALANTA
  • ISSN:   0039-9140 EI 1873-3573
  • 通讯作者地址:   Jiangsu Univ Sci Technol
  • 被引频次:   16
  • DOI:   10.1016/j.talanta.2018.11.038
  • 出版年:   2019

▎ 摘  要

Graphene aerogels (GAs) have demonstrated great promise as sorbent materials. However, the intrinsically hydrophobic GAs are unsuitable for extraction of highly water-soluble analytes. Moreover, lack of compressibility limits the recyclability of GAs. In this work, an interesting type of water-induced self-recoverable amphiphilic GA was synthesized and employed as sorbent to extract nine priority phenols, listed as priority pollutants by the United States Environmental Protection Agency, from aqueous samples. The water-induced self-recoverability gives the GA the characteristic of a sponge, providing high recyclability and long-life. The aerogel was placed in a 2-mL microsyringe for in-syringe extraction of the phenols. The GA exhibits amphiphilicity due to the cross-linking by polyvinyl alcohol. At the same time, it exhibited selectivity to the water-soluble phenols. The extracted phenols were eluted with acetonitrile from the GA and the final extract was analyzed by high-performance liquid chromatography with ultraviolet detection (HPLC-UV). The results showed that this method provided low limits of detection for the phenols (0.089-0.015 mu g/L), good linearity (r(2) >= 0.9956) and low relative standard deviations (