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光度法单一稀土的测定主要依靠4/电子的跃迁及其受配位场或环境影响后的超灵敏光谱,钕与钛铁试剂络合后使其特征峰增强约4倍可用于测定钕。我们发现此络合物在紫外区尚有二强吸收峰,镧、铈、错、钕、钐、钇的峰位均相同,且摩尔吸光系数很接近,因而可用以代替称量测定总稀土(在255nm)。为提高灵敏度与消除干扰,我们用其三阶导数光谱测钕。据此拟定的快速测定钕法曾试用于合成样及实物,均获得满意的结果。
The determination of a single rare earth elemental luminosity depends mainly on the 4 / electron transition and its ultra-sensitive spectra under the influence of the coordination field or the environment. Neodymium is enhanced by about 4 times its characteristic peak after complexation with the ferrotitanium reagent and can be used to determine neodymium. We found that this complex has two strong absorption peaks in the ultraviolet region. The peak positions of lanthanum, cerium, erroneous, neodymium, samarium and yttrium are the same, and the molar extinction coefficient is very close, so that instead of weighing the total rare earth At 255 nm). To improve sensitivity and eliminate interference, we use its third derivative spectroscopy to measure neodymium. According to the rapid determination of the neodymium method proposed for the synthesis of samples and in-kind, are satisfactory results.