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通过对Sc,Y和La等十六个稀土元素的60条谱线的Zeeman分裂谱图和在ZAAS(CPMPM方式)仪上灵敏度实验对比的研究,可得如下结论:(1)在10kG横向恒磁场偏振分离调制方式里,所研究的60余条谱线中,只有4条线的灵敏度下降到原来的1/3以下,大约有45条线的A_r>0.50.可以认为,在ZAAS仪上,从分析应用角度来看,这些元素的主要吸收线灵敏度受Zeeman分裂影响较小,与NAAS相近。因此此仪对稀土元素的通同性是肯定的。(2)鉴于Sm,Nd,Eu,Ce四种元素的主吸收线在ZAAS仪上灵敏度下降较多,建议以Nd 4634.34A,Sm 4841.70A,Eu 4627.22A及Ce 5669.96A四线为这类仪上的主分析线。(3)对Sm 4296.74和4841.70A,Nd4634.34A,Ce5669.96和5201.30A,Dy4186.81A及Y4128.31A为典型代表的31条谱线能级进行了讨论。依据文献J和g_(ob)值绘出了较合理的Zeeman谱图。
Through the Zeeman cleavage spectrum of 60 lines of 16 rare earth elements such as Sc, Y and La and the experimental comparison of the sensitivity on the ZAAS (CPMPM) instrument, the following conclusions can be drawn: (1) In the magnetic polarization separation modulation mode, of the more than 60 spectral lines studied, the sensitivity of only 4 lines has dropped to below 1/3 of the original, and about 45 lines have A_r> 0.50. It can be considered that on the ZAAS instrument, From the analytical application point of view, the main absorption line sensitivities of these elements are less affected by Zeeman division, similar to NAAS. Therefore, this instrument is common to rare earth elements is affirmative. (2) Considering that the main absorption lines of Sm, Nd, Eu and Ce decrease greatly in sensitivity on ZAAS, it is suggested that Nd 4634.34A, Sm 4841.70A, Eu 4627.22A and Ce 5669.96A four lines should be used for such instruments On the main line of analysis. (3) The typical energy levels of Sm 4296.74 and 4841.70A, Nd4634.34A, Ce5669.96 and 5201.30A, Dy4186.81A and Y4128.31A are discussed. According to the literature J and g_ (ob) values draw a more reasonable Zeeman spectrum.