一、引言 在核燃料循环中,准确地测定硼同位素丰度及确定核燃料产品中硼含量具有重要意义。 关于硼的化学提纯方法有蒸馏法、萃取法,离子交换法,汞阴极电解法等,其中蒸馏法能使硼与其他杂质元素分离比较完全,而且,操作简便、重复性好、适应范围广。本工作用蒸馏法提纯浓缩硼元素获得了比较满意的结果。 I. INTRODUCTION In the nuclear fuel cycle, accurate determination of boron isotope abundance and determination of boron content in nuclear fuel products is of great significance. About boron chemical purification methods are distillation, extraction, ion exchange, mercury cathodic electrolysis, etc., which can make the separation of boron and other impurities more complete separation of elements, and easy to operate, repeatability, and adapt to a wide range. This work was purified by distillation of boron concentrate obtained satisfactory results.