本文介绍了用甲醇蒸馏法将反应堆卸料硼钢管中的硼与裂变产物~(60)Co 及其他元素进行分离;用 CH_5质谱计、热表面电离法测定该硼钢管中可燃毒物~(10)B 的燃耗。燃耗深度在80%以上时,测定值的相对标准偏差小于0.1%。 In this paper, the separation of boron and fission products ~ (60) Co and other elements from the boron steel pipe unloaded by methanol distillation was introduced. The combustible poison ~ (10) in the boron steel pipe was measured by CH_5 mass spectrometry and hot surface ionization method. B’s fuel consumption. When the burnup depth is above 80%, the relative standard deviation of the measured value is less than 0.1%.