Study on monoxide emission spectrometry of rare earth elements I. Determination of Sm in rare earth concentrate by dual wavelength method

On the basis of investigated enhancement effect of La, Nd, Eu, and Y on Sm determination with monoxide molecular emission spectrometry,. La was selected as enhancement agent and chemical interference inhibitor. In-the presence of La, dual wavelength method was introduced to eliminate the spectral interference on Sm by other elements. A new method was established to determine samarium in high yttrium rare earth samples with satisfactory results.