Overview on the New Generation of Extraction Technique: Fabric Solid-Phase Extraction

Fabric phase sorptive extraction (FPSE) is a new-generation of sample preparation technique that effectively combines representative characteristics of solid-phase microextraction – SPME (equilibrium-based extraction) and solid phase extraction – SPE (exhaustive extraction). FPSE was introduced in 2014 by Kabir A. and Furon K.G. FPSE utilizes a fabric substrate (natural or synthetic such as cotton or polyester) that is chemically coated with a hybrid sorbent (organic-inorganic sol-gel). The entire assembly (fabric substrate coated with the sol-gel polymer) results in a fast and sensitive micro-extraction device. The FPSE development process can be described in 3 main steps: (1) Preparation of the fabric substrate for sol-gel coating, (2) preparation of the sol-solution for coating the substrate, and (3) formation of sol-gel coatings on the fabric substrate. Using this technique can be ensured a faster, cleaner, and with a high concentration of analyte solution. FPSE is a method that can be easily modified and used in different types of applications. For this reason, FPSE is increasingly used in the scientific community dealing with sample pretreatment. By using this technique, promising results have been obtained both for the extraction and determination of certain analytes from environmental samples, as well as from other types of samples, with complex matrices (food and biological samples). This study aims to summarize the existing data on FPSE and to briefly present this innovative method.