New Sorbents for Extraction and Microextraction Techniques

The outlines of this speech is to shine light on recent research and developments in some new classes of sorbents for extraction and microextraction techniques. These results are part of the works carried out by our research team and there has been an attempt to introduce some new applications of nanosorbents in a perspective view. Carbon based nanosorbente such as types of graphene and carbon nanotubes are very stable systems that having considerable chemical inertness due to the strong covalent bonds of the carbon atoms on the nanostructure surface. Molecular Imprinting has proved to be an effective technique in the field of extraction. By a mechanism of molecular recognition, the molecularly imprinted polymers are used as selective tools for the development of various analytical techniques such as solid-phase extraction (SPE) and solid-phase microextraction (SPME). Sol–gel chemistry provides a convenient pathway to create advanced material systems that can be effectively utilized to solve the common solid phase microextraction fiber technology problems. Quantum dots (QD) are very small semiconductor particles that their optical and electronic properties differ from those of larger particles. quantum dots such as CdSe (QDs), graphene QDs and carbon CDs, have attracted much attention due to their unique properties. All of these materials combined with magnetic solid-phase extraction can be used as effective adsorbents for analysis of biological samples. This topic is mainly focused on recent advanced developments in the design, synthesis and application of the nanoadsorbents.