Abstract
Solid–liquid extraction (SLE) is the most widely used analytical technique for sample preparation of solids by partition of analytes between the two involved phases, the matrix and the extractant. The SLE process is regulated by three essential mechanisms: the extractant penetration in the solid matrix, the diffusivity of analytes to the outer space, and the solubility of the analytes in the extractant. Traditionally, SLE has been characterized by low quantitative efficiency and different actions have been implemented to enhance its performance. Among them, the most outstanding strategies to improve SLE quantitatively are the application of high temperature with high pressure and the assistance with auxiliary energies, particularly, microwaves and ultrasound. These strategies have led to sample preparation techniques such as superheated solvent extraction, microwaves-assisted extraction, and ultrasound-assisted extraction. In addition to the enhanced performance, these techniques allow reducing extraction time, automating the process, and reducing organic solvents consumption. The main features of SLE and these modifications are here revised to provide an overview about their applicability in the current scenario of analytical chemistry.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Analytical Sample Preparation With Nano- and Other High-Performance Materials
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
