Recent progress of graphene aerogel as sorbent in solid-phase extraction: A review

Graphene aerogel (GA) has recently gained attention as a promising sorbent in extraction due to its high specific surface area, excellent mechanical properties, and unique physicochemical properties. The material has been successfully applied in solid-phase extraction (SPE) for the preconcentration and extraction of various analytes, such as organic compounds, heavy metals, pharmaceuticals, etc., from different matrices such as water, soil and biological samples. GA as an SPE sorbent has been demonstrated to show high adsorption capacity, fast kinetics and good reusability. In this paper, the applications of GA and its composite materials in sample pretreatment or sample preparation are reviewed and discussed. The review also includes a projection of future developments and research direction concerning this interesting and versatile sorbent material.