The determination of La, Ce, Pr, Nd, Ni, Co and Mn in rare earth hydrogen storage alloy (AB_5 Type) by inductively coupled plasma atomic emission spectro-graphic method

摘要

La, Ce, Pr, Nd, Ni, Co and Mn, in a rare earth hydrogen storage alloy (AB_5 type) are determined by inductively coupled plasma atomic emission spectrographic method. The analytical lines are selected by studying the spectrum overlap interference of single elemental matrix. The matrix concentration being kept at 0.2 mg/ml, a matrix depression effect can be ignored. The recovery ratios and relative standard deviations of this analytical method range from 82% to 129% and from 2.2% to 11.1% respectively. A comparison of results between Inductively coupled plasma atomic emission spectrographic method and other methods is satisfactory. This analytical method has such merits as high sensitivity, rapidity, accuracy and multi-element simultaneous determination.