Browsing ELibrary by Author "Takahashi Y."

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A NEW METHOD FOR THE DETERMINATION OF CEIII/CEIV RATIOS IN GEOLOGICAL MATERIALS; APPLICATION FOR WEATHERING, SEDIMENTARY AND DIAGENETIC PROCESSES

Takahashi Y.; Shimizu H.; Kagi H.; Yoshida H.; Usui A.; Nomura M. (2000)

Relative abundances of rare earth elements (REE) in geological materials are used widely to investigate diverse geochemical issues such as the origins of igneous rocks or the degree of stratification of water columns in ...
COMPARISON OF ADSORPTION BEHAVIOR OF MULTIPLE INORGANIC IONS ON KAOLINITE AND SILICA IN THE PRESENCE OF HUMIC ACID USING THE MULTITRACER TECHNIQUE - A COMPARISON WITH DISSOLVED ALUMINUM

Takahashi Y.; Minai Y.; Ambe S.; Makide Y.; Ambe F. (1999)

The influence of humate formation on the adsorption of various ions on kaolinite and amorphous silica was studied using the multitracer technique, i.e., the simultaneous application of a variety of radioactive tracers. The ...
DIRECT OBSERVATION OF CM(III)-FULVATE SPECIES ON FULVIC ACID-MONTMORILLONITE HYBRID BY LASER-INDUCED FLUORESCENCE SPECTROSCOPY

Takahashi Y.; Kimura T.; Minai Y. (2002)

Particulate matter plays an important role in the removal of metal ions from water in natural aquifers. Some of the most important of these materials consist of associations of inorganic particles (clay minerals, oxides) ...
DIRECT OBSERVATION OF TETRAVALENT CERIUM IN FERROMANGANESE NODULES AND CRUSTS BY X-RAY-ABSORPTION NEAR-EDGE STRUCTURE (XANES)

Takahashi Y.; Shimizu H.; Usui A.; Kagi H.; Nomura M. (2000)

X-ray-absorption near-edge structure (XANES) was successfully applied for the direct determination of Ce valence in hydrogenetic ferromanganese nodules (two samples) and crust (one sample). Rare earth element (REE) patterns ...

Browsing ELibrary by Author "Takahashi Y."

Browsing ELibrary by Author "Takahashi Y."

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