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本文介绍了采用相对灵敏度因子法和同位素稀释法直接定量分析５Ｎ～６Ｎ的高纯Ｅｕ２Ｏ３，中２０多种痕量元素，大多数元素检测限为０．００ｘμｇ／ｇ，相对标准偏差在３０％以内。其中Ｃｕ、Ｚｎ采用同位素稀释法进行测定，相对标准偏差优于１０％。
In this paper, more than 20 kinds of trace elements in 5N ~ 6N high purity Eu2O3 were analyzed by relative sensitivity factor method and isotope dilution method. The detection limits of most elements were 0.00 × μg / g and the relative standard deviations were within 30% . Among them, Cu and Zn were determined by isotope dilution method, the relative standard deviation was better than 10%.