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工业上分离锂同位素 (～6Li和7Li) 的方法为锂汞齐法, 但该法需使用大量有毒的汞, 对人类健康和环境卫生带来了严重问题.Ga是与Hg类似的液态金属, 对比Hg-Li相图和Ga-Li相图, 二者实际极为相似, 因此Ga有可能替代Hg分离锂同位素.本文选择具有更低共晶温度的Ga-In合金分离锂同位素, 结果表明6Li确实优先嵌入Ga-In合金中, 单级分离系数为1.01;Ga-In合金能分离锂同位素, 具有一定的发展前景.“,”The industrial method for lithium isotope (～6Li and 7Li) separation is using amalgam.However, this method requires the use of plenty of toxic mercury, causing serious human health and environmental problems.Gallium is a kind of liquid metal like mercury.Phase equilibrium diagrams of Hg-Li and Ga-Li are compared, and it is found that the two systems are very similar.Therefore, gallium may replace mercury to separate lithium isotope.Gallium-indium alloy of lower eutectic temperature was selected to separate lithium isotope.The results show that the lighter isotope 6Li is preferentially fractionated into gallium-indium alloy with single-stage lithium isotope separation factor of 1.01.Gallium-indium alloy has the potential for the separation of lithium isotope with certain development prospects.