论文部分内容阅读
本文提出用CHCl_3选择性萃取稀土-二安替匹啉甲烷-I~三元络合物的方法,从铁、镍合金中分离微量稀土元素,借偶氮胂Ⅲ光度测定。本文较为详细地研究了稀土三元络合物的定量萃取条件及Cu(Ⅱ).W(Ⅵ)对萃取的影响等。在确定的最佳分离及测定条件下,大多数金属离子不干扰测定。方法的测定下限为0.001%RE,相对标准偏差小于8.0%。
In this paper, a method for selective extraction of rare earth-diantipyridium methane-I ~ ternary complex with CHCl_3 was proposed. Trace rare earth elements were separated from iron and nickel alloys by arsenazo Ⅲ spectrophotometry. In this paper, the quantitative extraction conditions of rare earth ternary complexes and Cu (Ⅱ), W (Ⅵ) on the extraction were studied in more detail. Under the conditions of the determination of the best separation and determination, most of the metal ions do not interfere with the determination. The method has a lower limit of determination of 0.001% RE and a relative standard deviation of less than 8.0%.