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Liquid-liquid extraction system consisting of oxytetracycline (HOTC) in dichloromethane was developed for extraction of Nd +3  and Eu +3  from acidic solutions using radiometric technique. Various extraction parameters such as pH, equilibration time and metals concentration were optimized. Slope analysis method was used to study the composition of product and was found to be M(OTC) 3  [here M=Nd +3  or Eu +3  and OTC = conjugate base of HOTC]. Among cations Al +3  and Fe +3  while among anions F −  effected the extraction of these metals. Higher separation factor of these metals was found with many others. The method was successfully applied on spiked sea water.

Liquid-liquid extraction of Nd +3 and Eu +3 from aqueous medium using oxytetracycline in dichloromethane