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本文探讨了共存稀土离子及温度对镨、钕、钐、铕、镝、钬、铒、铥等稀土离子的高氯酸溶液的二阶导数吸收光谱的影响。在所选定的分析峰位,共存稀土离子或不干扰或仅存在轻微干扰,而对于待测稀土离子导数峰的这种轻微干扰及温度的影响,都可用校正系数法消除。文中提出了一种在混合稀土(十五个稀土元素共存)中直接、快速测定上述八个稀土元素的导数光度法,并在合成样品及实际样品分析中获得了满意的结果。
In this paper, the effects of coexisting rare earth ions and temperature on the second derivative absorption spectra of perchloric acid solutions of rare earth ions such as praseodymium, neodymium, samarium, europium, dysprosium, holmium, erbium, In the selected analysis peak position, the coexistence of rare earth ions or non-interference or only minor interference, and for rare earth ions to be tested for this slight interference and temperature effects, can be used to eliminate the correction factor method. In this paper, a derivative spectrophotometry for the direct and rapid determination of the above eight rare earth elements in mixed rare earths (coexistence of fifteen rare earth elements) is proposed. Satisfactory results have been obtained in the synthesis and practical samples analysis.