Trace analysis of rare earth elements and other impurities in high purity scandium by inductively coupled plasma mass spectrometry after liquid-liquid extraction of the matrix

Trace amounts of rare earth elements in high purity samarium oxide by sector field inductively coupled plasma mass spectrometry after separation by HPLC

“…The recovery percentage ranged from 99 to 102%, which shows that the method is adequate for analytical applications (see Table 3). The results illustrated in Table 3 showed good agreements with data available for Panday et al [20]. …”

“…Quality control of high purity rare earth compounds requires high standards of analytical chemistry in the concentration range down to 10 −9 g g −1 . Several analytical techniques have been used for the quantification of REE as impurities in high purity materials [1][2][3][4][5][6]. Stijfhoorn et al [7] and Zhang et al [9] evaluated the * Corresponding author.…”

Determination of Rare Earth Impurities in High-purity Lanthanum Oxide Using Electrothermal Vaporization/ICP-AES after HPLC Separation

“…Therefore, a separation and preconcentration step prior to the analysis is still required. 4,5 Methods reported in the literatures for separation of REE included liquid-liquid extraction, 6,7 solid-liquid extraction 8 and column chromatography, 9,10 among which column chromatography has been applied widely in the separation among rare earth elements due to its high separation efficiency. 11,12 In recent years, extraction chromatography with chelating resin as a stationary phase has attracted considerable attention in the rare earth separation and preconcentration.…”

Determination of rare earth impurities in high purity samarium oxide using inductively coupled plasma mass spectrometry after extraction chromatographic separation

“…applications of ICP-MS for the determination of trace or ultratrace REEs as impurities exist in other high purity rare earth samples or other materials in spite of some potential problems encountered in the analytical procedures, such as matrix suppression and isobaric interferences of atomic and molecular ions [2][3][4][11][12][13]16,[18][19][20][21][22][23][24][25][26][27][28][29]. The matrix suppression could be compensated by means of adding internal standard because the intensity of internal standard element and analytes of interest decreased at the same time with matrix concentration increasing [2,17,[19][20][21][22][23][24][25].…”