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1. Analysis of rare-earth elements in soil sample by using laser-ablation ion trap mass spectrometry
Kyuseok Song,Hyungki Chaa, Jongmin Lee, Hyunkook Park and Sang Chun Lee
Microchemical Journal
Volume 68, Issues 2-3, March 2001, Pages 265-271

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http://dx.doi.org/10.1016/S0026-265X(00)00152-1

2. Liquid chromatography–inductively coupled plasma mass spectrometry
Karen L. Sutton and Joseph A. Caruso
Journal of Chromatography A
Volume 856, Issues 1-2, 24 September 1999, Pages 243-258

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http://dx.doi.org/10.1016/S0021-9673(99)00580-4

3. Determination of rare earth element in carbonate using laser-ablation inductively-coupled plasma mass spectrometry: An examination of the influence of the matrix on laser-ablation inductively-coupled plasma mass spectrometry analysis
Kazuya Tanaka, Yoshio Takahashi and Hiroshi Shimizu
Analytica Chimica Acta
Volume 583, Issue 2, 5 February 2007, Pages 303-309

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http://dx.doi.org/10.1016/j.aca.2006.10.023

4. Determination of ultra-trace rare earth elements in chondritic meteorites by inductively coupled plasma mass spectrometry
Liu Haichena, Liu Ying and Zhang Zhanxia
Spectrochimica Acta Part B: Atomic Spectroscopy
Volume 53, Issue 10, 4 September 1998, Pages 1399-1404

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http://dx.doi.org/10.1016/S0584-8547(98)00148-7

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