Reported in this paper is a method of analysis of REE isotopes in RE minerals by paper chromatography-mass spectrometry. The pre-treatment of ore samples was followed by paper chromatography to obtain individual pure ...Reported in this paper is a method of analysis of REE isotopes in RE minerals by paper chromatography-mass spectrometry. The pre-treatment of ore samples was followed by paper chromatography to obtain individual pure rate-earth elements. REE isotopic: analysis was carried out on a TSN-206 mass spectrometer. In paper chromatography butanone-9 M NH4SCN·HNO3 ( 150:2:1.5, V/V) was used as developing agent. In the light of the areas and colors of color spots on the paper chromatograms of rare-earth elements the contents of various rare-earth elements and Sm/Nd ratios can be roughly estimated. This method has the advantages of simple equipment, easy operation and direct estimation, as has been confirmed by the results of mass spectrometric analysis of Nd isotopes in some RE minerals. The relative standard deviations involved in most determined values are within the range of 0.02%.展开更多
文摘Reported in this paper is a method of analysis of REE isotopes in RE minerals by paper chromatography-mass spectrometry. The pre-treatment of ore samples was followed by paper chromatography to obtain individual pure rate-earth elements. REE isotopic: analysis was carried out on a TSN-206 mass spectrometer. In paper chromatography butanone-9 M NH4SCN·HNO3 ( 150:2:1.5, V/V) was used as developing agent. In the light of the areas and colors of color spots on the paper chromatograms of rare-earth elements the contents of various rare-earth elements and Sm/Nd ratios can be roughly estimated. This method has the advantages of simple equipment, easy operation and direct estimation, as has been confirmed by the results of mass spectrometric analysis of Nd isotopes in some RE minerals. The relative standard deviations involved in most determined values are within the range of 0.02%.