New extraction media in microextraction techniques. A review of reviews

Sample preparation is considered one of the most critical steps in the analytical process. Conventional sample preparation techniques suffers from both a lack of selectivity and consuming large amounts of organic solvents. In recent years, the development of microextraction techniques (METs) for sample preparation has led to improved analytical figures of merit including recovery, precision, linearity, limit of detection, and limit of quantification. In addition, these techniques are inexpensive, reusable, solvent-minimized, and reduce the analysis time. It is well known that, the efficiency of METs mainly depends on the choice of a suitable extraction media. Over time, many review articles have focused on the application of different extraction media in METs. This article, summarizes the review publications describing new extraction media in METs along with the different aspects and areas of application.