Determination of Sc, Y and Rare Earth Elements in Geochemical Samples by High Resolution Inductively Coupled Plasma-Mass Spectrometry

BAI Jin-feng; ZHANG Qin; SUN Xiao-ling; DONG Yong-sheng; FAN Hui; XU Jin-li; LIU Ya-xuan

Rock and Mineral Analysis > 2011 > 30(1): 17-22.

BAI Jin-feng, ZHANG Qin, SUN Xiao-ling, DONG Yong-sheng, FAN Hui, XU Jin-li, LIU Ya-xuan. Determination of Sc, Y and Rare Earth Elements in Geochemical Samples by High Resolution Inductively Coupled Plasma-Mass Spectrometry[J]. Rock and Mineral Analysis, 2011, 30(1): 17-22.

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Determination of Sc, Y and Rare Earth Elements in Geochemical Samples by High Resolution Inductively Coupled Plasma-Mass Spectrometry

1.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
2.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
3.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
4.
No.3 Geology Mineral Resources Exploration and Development Co. LTD of Inner Mongolia, Huhehaote 010050, China
5.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
6.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
7.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China

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Received Date: January 13, 2010
Revised Date: May 26, 2010

Abstract

ABSTRACT

An analytical method for the determination of Sc, Y and 14 rare earth elements (La, Ce, P, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) by high resolution inductively coupled plasma-mass spectrometry (HR-ICP-MS) has been developed. Samples were decomposed by HF-HNO₃-H₂SO₄-aqua regia, then 16 elements above in the solution were directly analyzed by HR-ICP-MS. The spectra interferences from polyatomic ions and oxide ions (MO⁺) could be avoided by measuring at high resolution mode. The optimal determination isotopes and appropriate resolution for rare earth elements (REEs) were selected. The operating parameters of HR-ICP-MS were optimized by testing geochemical standard materials with plenty of matrix. The detection limits (6σ) of the method for REEs were 0.003~0.013 μg/g (DF=1000). The relative standard deviation (RSD) was less than 6% (n=12). The method has been applied to determination of Sc, Y and REEs in geochemical national standard reference materials and the analytical results were in agreement with the certified values.
- scandium,
- yttrium,
- rare,
- earth,
- elements,
- geochemical

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References (9)

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