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-ray detectionsKimura, Atsushi; Oshima, Masumi
Tetsu To Hagane, 90(12), p.1004 - 1009, 2004/12
no abstracts in English
Nagano, Tetsushi; Yanase, Nobuyuki; Tsuzuki, Katsunori; Nagao, Seiya*
Environment International, 28(7), p.649 - 658, 2003/01
Times Cited Count：29 Percentile：52.4(Environmental Sciences)In order to investigate the role of suspended particulate matter (SPM) in fluvial discharge of trace and major elements in the Kuji River, Japan, the SPM concentrations in the river water and chemical compositions of SPM were analyzed together with the dissolved form concentrations. The SPM concentrations increased by 2 or 3 orders of magnitude with the water discharge, and also had seasonal variations. The suspended species have the key role in transport of some trace and major elements in some fluvial environments and hence should be taken into account in estimating the total discharge through the river waters.
Tachikawa, Enzo*; Hoshi, Michio; Aratono, Yasuyuki; Hashimoto, Kazuyuki
Genshiro Suikagaku Handobukku, p.57 - 66, 2000/12
no abstracts in English
Shin, Sumio*; Sato, Kiichi*; Nishida, Hiroshi*; Sakamoto, Shoichi*; Yamabayashi, Hisamichi; Motoki, Ryozo; Terunuma, Kusuo; Yamamoto, Takeo
Igaku No Ayumi, 140(1), p.51 - 52, 1987/01
Trace elements serve as key components of enzyme systems and have especially important correlation with fetal maturity.
Kagami, Saya
no journal, ,
Tephrochronology, which uses tephra to determine the chronostratigraphy of strata is important to understand geotectonic events for the last few Myr. We used EPMA and LA-ICP-MS for major and trace element concentration of volcanic glass shards in Znp-Ohta tephra and Tng tephra, of which major elements are similar to that of Znp-Ohta. These two tephras could be distinguished by rare earth elements pattern, in addition to the conventional indices. Identification of tephras by more than one indicator could distinguish tephra with similar characteristics and prevent incorrect stratigraphic correlation. It is necessary to improve the chemical composition database of wide-spread tephras including trace element compositions, and we plan to measure various wide-spread tephras by the method in this study.
