Advancements and innovations in solvent-based extraction techniques

The extraction techniques are very effective separation procedures and are widely employed in various applications in the field of chemistry. The applications of extraction techniques include waste treatment, food engineering, pharmaceutical, biological and environmental sample analyses. The preparation of samples is crucial part of analytical process. The extraction processes involve many solvents to extract the different samples. The selection of solvents are therefore important, because many solvents are toxic which are used in extraction process. These solvents may produce hazardous and toxic waste though consuming huge volume and are harmful for environment. The developing a new environmentally friendly solvent is a great important in the filed chemistry to decrease the number of anthropogenic actions associated to analytical laboratories. There are many novel eco-friendly solvents applied as extractant phases. These solvents, are more eco-friendly, low cost, simple, provide the low extraction times with well selectivity. In this chapter we discuss a number of solvents used in the extraction techniques such as deep eutectic solvents (DESs), supramolecular solvents, switchable solvents, ionic liquids (ILs), supercritical fluids used as solvents. © 2025 Elsevier Inc. All rights reserved.