A Study on Argon Inductively Coupled Plasma with Introduction of Ethanol SolutionⅠ.Effect of Ethanol on Line Intensity of Rare Earth Elements

Effect of ethanol on corrected intensity,i.e.the intensity corrected for the rate at which an analyte solutionenters ICP,of lines of 10 rare earth elements,Mg,Fe and Cd have been studied,Compared to the aqueous case,the introduction of an ethanol solution results in a decrease in corrected intensity.For all the ionic lines and theatomic lines of Cd,the corrected intensities decrease steadily with increasing ethanol concentration from 0 to95 vol%.while for the atomic lines of the other elements,the corrected intensities have minima at certainethanol concentration.For a given element,the higher the excitation energy of a line,the greater the decrease inthe corrected intensity with the introduction of ethanol,The depression of corrected intensity by ethanol islinearly related to excitation energy.The above results have been used for identifying the ionization states of 38lines of rare earth elements and estimating their excitation energies.     

稀土元素的原子吸收光谱分析研究 Ⅳ.在空气—乙炔焰中络合剂对铕的增感效应

在空气—乙炔焰中,研究了有机络合剂对铕的增感效应,并初步探讨了弱酸性络合剂对铕原子吸收光谱分析行为的影响。试验了6种无机酸、22种普通离子、15种非铕稀土对铕的干扰及其消除,从而确定了测定铕的最佳条件。所拟定的分析方法的准确度、精密度良好,灵敏度为2.6ppmEu/1％吸收,应用于合成试样和混合稀土试样中铕的测定,结果满意。