Analytical Sciences

Multielement Determination of Rare Earth Elements in Geochemical Samples by Liquid Chromatography/Inductively Coupled Plasma Mass Spectrometry

Akihide ITOH*, Tadashi HAMANAKA**, Wei RONG**, Katsuya IKEDA**, Hideyuki SAWATARI***,

Koichi CHIBA** and Hiroki HARAGUCHI**
*Reseach Center for Advanced Waste and Emission Management, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
**Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
***Faculty of Education, Miyagi Institute of Education, Aramaki, Sendai 980-0845, Japan

A system of liquid chromatography combined with inductively coupled plasma mass spectrometry (ICP-MS) has been applied to the determination of rare earth elements (REEs) in geochemical standard reference samples. In liquid chro-matography, a strong ion-exchange resin was employed as a stationary phase and ammonium lactate was used as a mobile phase. Multielement detection by ICP-MS was performed in the peak hopping mode to measure the chromatograms for all REEs at the corresponding mass numbers. REEs in the standard rock sample (GSJ JB-1) and the standard sediment sample (Pond Sediment; NIES No.2) were determined by the present measurement system without any correction of the matrix effect and polyatomic ion interferences. (Keywords: Inductively coupled plasma mass spectrometry, rare earth element, geochemical sample, ion exchange chro-matography)

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