Investigations of coal beneficiation by using choline chloride and urea-based deep eutectic solvent

Enhanced electrochemical determination of quercetin in a choline chloride-based ionic liquid

“…The intensities and areas of the peaks are used to quantify functional groups. [43][44][45] The DES treatment inuenced the absorption band of quercetin functional groups. The height of peaks at 3290 cm −1 corresponding to H-bonded phenols and alcoholic group vibrations was reduced.…”