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Extraction Chromatograph Separation Spark Source Mass Spectrometric Analysis of 14 Rare Earth Impurities in High Purity Rare Earth Oxide
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1995, v.8 no.4, pp.553-559
Sui,
X., Wang,
Z., &
Shao,
B.
(1995). Extraction Chromatograph Separation Spark Source Mass Spectrometric Analysis of 14 Rare Earth Impurities in High Purity Rare Earth Oxide. Analytical Science and Technology, 8(4), 553-559.
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Abstract
An extraction chromatographic method of separating rare earth impurities from high purity <TEX>$Nd_2O_3$</TEX>, <TEX>$Sm_2O_3$</TEX>, <TEX>$Gd_2O_3$</TEX>, <TEX>$Er_2O_3$</TEX>, <TEX>$Dy_2O_3$</TEX> and <TEX>$Yb_2O_3$</TEX> was studied by using <TEX>$HCl-NH_4Cl$</TEX> as moving phase and P507 as stationary phase. After the impurities were enriched from the eluate by chelant-activated carbon, the active carbon was ashed and the ignited residue was used to prepare the sample electrode for spark source mass spectrometric determination. The impurities in 99.9999% rare earth oxide can be determined by the proposed method with recovery over 80%.
- keywords
- Extraction chromatography, Rare earth element, Spark source mass spectrometry
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