The method used is divided into two parts. One part is the determination of La, Ce, Pr and Sm by pretreatment neutron activation analysis. The other part is the determination of Ce, Eu, Tb, Tm, Yb and Lu by direct ins...The method used is divided into two parts. One part is the determination of La, Ce, Pr and Sm by pretreatment neutron activation analysis. The other part is the determination of Ce, Eu, Tb, Tm, Yb and Lu by direct instrument neutron activation analysis. Pretreatment of samples was carried out by P<sub>507</sub> extraction chromatography. The decontamination factor of Y was 2×10<sup>4</sup>. A sensitive method for determination of REE in high-pure Y<sub>2</sub>O<sub>3</sub> was established.展开更多
文摘The method used is divided into two parts. One part is the determination of La, Ce, Pr and Sm by pretreatment neutron activation analysis. The other part is the determination of Ce, Eu, Tb, Tm, Yb and Lu by direct instrument neutron activation analysis. Pretreatment of samples was carried out by P<sub>507</sub> extraction chromatography. The decontamination factor of Y was 2×10<sup>4</sup>. A sensitive method for determination of REE in high-pure Y<sub>2</sub>O<sub>3</sub> was established.
