“…However, most of this work explored different water/organic reprocessing techniques, not molten salts. [19][20][21][22][23] Limited studies of non-fblock and f-block elements in molten salts could be found where process monitoring has been applied. [24][25][26][27] We have studied the electrochemical and spectroscopic properties of lanthanide salts in various solvents, ranging from aqueous solution 28 to a series of binary molten salt eutectics containing LiCl mixed with NaCl, KCl, RbCl, and CsCl.…”