Association of cesium with ferric components in altered flood basalt |
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| Authors: | Y Minai Y Nakamura H Wakita T Tominaga |
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| Institution: | (1) Department of Chemistry, Faculty of Science, University of Tokyo, Hongo, 113 Bunkyo-ku, Tokyo, Japan;(2) Laboratory for Earthquake Chemistry, Faculty of Science, University of Tokyo, Hongo, 113 Bunkyo-ku, Tokyo, Japan |
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| Abstract: | Cesium content in eleven positions of a continental basalt with a columnar joint was determined by means of neutron activation analysis. Concentration of cesium is about four times higher at the altered portions of the fracture than at the unaltered. Water and Fe3+ content determined by gravimetry, Mössbauer spectroscopy, and inductively coupled plasma optical emission spectroscopy were also correlated with cesium concentration, suggesting accumulation of cesium with ferric components. Such processes may be important for estimating the behavior of radiocesium in the environment. |
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