论文部分内容阅读
Five trace impurities as Ce, Pr, Sm, Gd, and Dy are separated from europium oxide with P507 extraction resin byextraction chromatography. When determined simultaneously by ICP-AES, the impurities show their recovery ratios be-tween 88% and 105%. A lower than 10% relative standard deviation of these elements is obtained when their contents ineuropium oxide are 5 u.g/g. The satisfactory results indicate this simple method is sensitive and accurate. It has been em-ployed in the analysis of these five rare earth elements in 99.99% europium oxide.
Five traces of as Ce, Pr, Sm, Gd, and Dy are separated from europium oxide with P507 extraction resin byextraction chromatography. When determined by ICP-AES, the impurity show 88% and 105% of their recovery ratios be-tween lower than 10% relative standard deviation of these elements is obtained when their contents ineuropium oxide are 5 ug / g. The satisfactory results indicate this simple method is sensitive and accurate. It has been em-ployed in the analysis of these five rare earth elements in 99.99% europium oxide.