Abstract
In the present work, we review the methods employed in the investigation of solvent extraction mechanism. The employment of slope-analysis traditional methods in extraction were accomplished based on chemical equilibrium, the stoichiometry of extracted complexes and gained no definitive structural information of the extracted complexes. The application of molecular vibration spectrum, electrospray ionization mass spectrometry, nuclear magnetic resonance, X-ray single crystal diffraction, synchrotron radiation X-ray absorption spectrometry, etc. modern analytical techniques in the investigation of solvent extraction also provide the coordination structure of the extracted species formed during the extraction process. However, not every analytical technique is available, such as synchrotron radiation X-ray absorption spectrometry, the most effective method to study the structure of short-range ordered systems such as amorphous samples and solutions, while others employed in the investigation of the solid structure which is not suitable for solvent extraction. The combination of X-ray single crystal diffraction and modern spectral techniques provide new directions in the investigation of solvent extraction mechanism.
Graphical Abstract
Disclosure statement
No potential conflict of interest was reported by the authors.