A-5: Advances in analytical techniques for the study of water-rock interaction.

[OA5-03] Development of High-Energy µ-X-ray Fluorescence and X-ray Absorption Fine Structure for the Distribution and Speciation of Rare Earth Elements in Natural Samples

*Makoto Nagasawa¹, Oki Sekizawa², Kiyofumi Nitta², Teruhiko Kashiwabara³, Yoshio Takahashi^1,4 (1. University of Tokyo (Japan), 2. Japan Synchrotron Radiation Research Institute (JASRI) (Japan), 3. Japan Agency for Marine-Earth Science and Technology (JAMSTEC) (Japan), 4. Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK) (Japan))

Keywords:High-energy µ-XRF-XAFS, Rare earth elements (REEs), K-edges and K lines of REEs, Speciation, Weathered granite