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在直流电弧中研究了发射光谱分析的有关条件,使用二米平面光栅摄谱仪一级光谱二次投射氩、氧控制气氛测定氧化铕中十四个稀土杂质,测定下限CeO_2、Pr_6O_(11)2×10~(-3)％,Nd_2O_3、Tb_4O_71×10~(-3)％,Gd_2O_37×10(-4)％,La_2O_3、Sm_2O_3、Dy_2O_3、Ho_2O_3、Er_2O_35×10~(-4)％,Tm_2O_3、Lu_2O_3×10(-4)％,Y_2O_31×10(-4)％,Yb_2O_33×10(-5)％,杂质总量测定下限0.01％,单次测定相对均方偏差5.6～15％,加料试验,数据符合较好。
In the DC arc, the relevant conditions of the emission spectrum analysis were studied. Fourteen rare earth impurities in the europium oxide were determined by the primary projection of argon and oxygen in the first order spectrum of a two-dimensional planar grating spectrograph, and the lower limits of CeO_2, Pr_6O_ (11) 2 × 10 -3%, Nd 2 O 3, Tb 4 O 71% -10 3%, Gd 2 O 3 37%, La 2 O 3, Sm 2 O 3, Dy 2 O 3, Ho 2 O 3, Er 2 O 35 × 10 -4%, Tm 2 O 3 , Lu_2O_3 × 10 (-4)%, Y_2O_31 × 10 (-4)%, Yb_2O_33 × 10 (-5)%, the lower limit of determination of the total amount of impurities is 0.01%, the relative average square deviation of single measurement is 5.6% to 15% , The data is in good agreement.