Jo Nov 20, 2023

Recently, rare earth elements (REEs) are widely used in special material science, and therefore, preparation and application of REEs have been rapidly developed.

La, Sm, Pr and Nd among REEs are common additives. It is important to determine amounts of them in materials since they change the mechanical and electronic properties of materials.

Kim Pyong Hun, a section head at the General Assay Office, has studied atomization process of La, Sm, Pr and Nd by GFAAS. He also investigated the possibility of preconcentration of REEs by selective evaporation of matrix, and found proper atomization and pyrolization temperatures. Then, he made sure the use of chemical modifier and mini-flow of internal gas at atomization step resulted in relative enhancement in sensitivity.