Influence of co-ions in the eluent on the separation factor of lithium isotopes |
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Authors: | D W Kim G S Lee |
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Institution: | (1) Department of Chemistry, Physical Chemistry Laboratory, College of Natural Sciences, The Chungbuk National University, 360-763 Cheongju, (Republic of Korea) |
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Abstract: | The influence of co-ions in the eluent on the separation factor ( ) of lithium isotope separation has been studied by ion exchange chromatography. A strongly acid cation exchange resin (Dowex 50W-X8) was used for the separation of lithium isotopes. The co-ions used in eluent were H+, K+, Ba2+, Cu2+, Al3+ and Cr3+ as their chlorides. From the experiments, it was found that6Li was enriched in the resin phase and7Li in solution phase. At the same distribution coefficient (Kd=30), the separation factor increased linearly with the charge of co-ion ( =1.0022 to 1.0039). |
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