对高浓度重水进行了质谱分析,利用同位素交换平衡法制备了氘样品。根据实验工作的要求,部分地改进了МИ1301型质谱计。拟定了分析方法。对导致产生误差的各种因素进行了分析,引入了必要的校正值。给出高浓度(>99%)重水氘的百分浓度数据的准确度为±0.02%。 Mass spectrometry analysis was carried out on high concentration heavy water, deuterium samples were prepared by isotope exchange equilibrium method. According to the experimental work, the mass spectrometer МИ1301 was partially improved. An analytical method has been developed. The factors that led to the error were analyzed and the necessary corrections were introduced. Accuracy of% concentration data giving high concentrations (> 99%) of heavy deuterium is ± 0.02%.