Thiosalicylate anions are known for their complexing capacity towards a wide range of transition metals. We have used this important sulfur-containing anion to synthesize the task-specific ionic liquid dioctylimidazolium thiosalicylate [DOIM] [TS] via ion exchange method in two steps. For characterization of [DOIM] [TS] we have used, electron spray ionization mass spectroscopy (ESIMS), nuclear magnetic resonance (NMR), infrared spectroscopy (IR), and thermal gravimetric analysis (TGA). The sulfur-containing IL was investigated for the removal of heavy metals (Cr3+, Mn2+, Fe2+, Co2+, Ni2+, Cu2+) from their aqueous solutions. The extraction efficiencies were determined through atomic absorption spectroscopy.
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Riaz et al. (2024) studied this question.
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