Abstract
Environmentally benign aqueous biphasic systems (ABS) are recognized as green systems in analytical research. In this study, a salt–salt ABS composing of water soluble ionic liquid (IL) 1-butyl-3-methylimidazolium chloride ([bmim]Cl) and kosmotropic salt K2HPO4 have been used for the separation of no-carrier-added (NCA) 203Pb from proton irradiated natTl2CO3 target. The optimum separation condition was obtained with 1 min shaking and 10 min settling time of the ABS, where ~60 % of NCA 203Pb was extracted into the IL rich phase with nominal contamination from bulk Tl. The reported separation technique is simple, rapid and meets the demands of green chemistry.
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Acknowledgments
We heartily thank BARC–TIFR Pelletron staffs for their help and co-operation. This work has been carried out as part of the SINP-DAE-12 five year plan project “Trace Ultratrace Analysis and Isotope Production (TULIP)”. KS and NN are thankful to University Grants Commission (UGC), India for their fellowship.
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Ghosh, K., Lahiri, S., Sarkar, K. et al. Ionic liquid-salt based aqueous biphasic system for rapid separation of no-carrier-added 203Pb from proton irradiated natTl2CO3 target. J Radioanal Nucl Chem 310, 1311–1316 (2016). https://doi.org/10.1007/s10967-016-4982-3
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DOI: https://doi.org/10.1007/s10967-016-4982-3