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Journal Articles

Determination of elemental composition of airborne dust and dust suspended in rain

Miyamoto, Yutaka; Saito, Yoko; Magara, Masaaki; Usuda, Shigekazu

Journal of Radioanalytical and Nuclear Chemistry, 255(3), p.553 - 557, 2003/03

https://doi.org/10.1023/A:1022548919533
 Times Cited Count：4 Percentile：31.64(Chemistry, Analytical)

To investigate the effect of weather on the composition of the dust and the possible origin of the dust, the elemental composition airborne dust was determined by INAA. The analyzed elements could be classified into 3 groups by the variation of concentration in the samples. The difference in concentration pattern may reflect the effect of rainfalls.

Journal Articles

Production of no-carrier-added $$^{177}$$Lu via the $$^{176}$$Yb(n,$$gamma$$)$$^{177}$$Yb$$rightarrow$$$$^{177}$$Lu process

Hashimoto, Kazuyuki; Matsuoka, Hiromitsu; Uchida, Shoji*

Journal of Radioanalytical and Nuclear Chemistry, 255(3), p.575 - 579, 2003/03

https://doi.org/10.1023/A:1022557121351
 Times Cited Count：42 Percentile：91.79(Chemistry, Analytical)

The $$beta^{-}$$ emitter $$^{177}$$Lu is a promising therapeutic radioisotope for the treatment of cancer. It has a half-life of 6.73 days and maximum $$beta^{-}$$ energy of 498 keV, resulting in a short range of radiation in tissue. The decay is accompanied by the emission of low energy $$gamma$$-radiation with $$E_{gamma}$$ = 208 keV (11.0%) and 113 keV (6.4%) suitable for simultaneous imaging. Lutetium-177 can be usually produced at nuclear reactors with high yield and high specific radioactivity by the $$^{176}$$Lu(n,$$gamma$$)$$^{177}$$Lu reaction. However, radioisotopes with higher specific radioactivity are required in the field of radioimmunotherapy using labeled monoclonal antibodies. Thus, an alternative production route, namely the $$^{176}$$Yb(n,$$gamma$$)$$^{177}$$Yb $$rightarrow$$ $$^{177}$$Lu process was studied to produce no-carrier-added (nca) $$^{177}$$Lu in this work. The radiochemical separation of the nca $$^{177}$$Lu from the macroscopic ytterbium target was investigated by means of reversed-phase ion-pair HPLC. The nca $$^{177}$$Lu was obtained in radiochemical pure form with a separation yield of 80%.

Journal Articles

Association of Am with humic substances isolated from river waters with different water quality

Nagao, Seiya*; Fujitake, Nobuhide*; Kodama, Hideki*; Matsunaga, Takeshi; Yamazawa, Hiromi

Journal of Radioanalytical and Nuclear Chemistry, 255(3), p.459 - 464, 2003/03

https://doi.org/10.1023/A:1022559727286
 Times Cited Count：8 Percentile：49.89(Chemistry, Analytical)

no abstracts in English

Journal Articles

Production of endohedral $$^{133}$$Xe-fullerene by ion implantation

Watanabe, Satoshi; Ishioka, Noriko; Sekine, Toshiaki; Osa, Akihiko; Koizumi, Mitsuo; Shimomura, Haruhiko*; Yoshikawa, K.*; Muramatsu, Hisakazu*

Journal of Radioanalytical and Nuclear Chemistry, 255(3), p.495 - 498, 2003/03

https://doi.org/10.1023/A:1022524214082
 Times Cited Count：11 Percentile：59.38(Chemistry, Analytical)

no abstracts in English

Journal Articles

Adsorbed compounds on pine needle surfaces for the environmental monitoring of uranium

Saito, Yoko; Miyamoto, Yutaka; Magara, Masaaki; Sakurai, Satoshi; Usuda, Shigekazu

Journal of Radioanalytical and Nuclear Chemistry, 255(2), p.341 - 345, 2003/02

https://doi.org/10.1023/A:1022560905479
 Times Cited Count：4 Percentile：31.64(Chemistry, Analytical)

no abstracts in English

Journal Articles

Speciation of Eu(III) in an anion exchange separation system with LiCl-H$$_{2}$$O/alcohol mixed media by time-resolved laser-induced fluorescence spectroscopy

Arisaka, Makoto*; Kimura, Takaumi; Suganuma, Hideo*; Yoshida, Zenko

Journal of Radioanalytical and Nuclear Chemistry, 255(2), p.385 - 389, 2003/02

https://doi.org/10.1023/A:1022529525952
 Times Cited Count：5 Percentile：36.81(Chemistry, Analytical)

no abstracts in English

Journal Articles

Atmospheric deposition of $$^{7}$$Be, $$^{40}$$K, $$^{137}$$Cs and $$^{210}$$Pb during 1993-2001 at Tokai-mura, Japan

Ueno, Takashi; Nagao, Seiya; Yamazawa, Hiromi

Journal of Radioanalytical and Nuclear Chemistry, 255(2), p.335 - 339, 2003/02

https://doi.org/10.1023/A:1022508921409
 Times Cited Count：20 Percentile：77.2(Chemistry, Analytical)

To evaluate the migration of radionuclides to the ground surface, deposition was collected from 1993 to 2001 with basin set up at Japan Atomic Energy Research Institute at Tokai-mura. Monthly basin samples were evaporated to dryness to obtain residual samples.These samples were measured by a well type Ge detector for natural and fallout radionuclide. These monthly depositions showed a clear seasonal variation with peaks in the early spring from February to April, and also in May in some years. The depositions of $$^{40}$$K and $$^{137}$$Cs have good correlation with the dry weight of deposited material, the depositions of $$^{7}$$Be and $$^{210}$$Pb showed much lower correlation coefficients. This difference in the correlation coefficient between these two groups of radionuclides can be attributed to the difference in the originating processes. These features in the concentration are thought to be caused by the difference in mechanism and location of origination, which would result in difference in the contributing particle size, and hence by the difference in the transport and deposition processes.

Journal Articles

Non-destructive determination of trace amounts of iodine in biological samples by epithermal neutron activation and Compton suppression $$gamma$$-ray spectrometry

Yonezawa, Chushiro; Matsue, Hideaki; Yukawa, M.*

Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.105 - 109, 2003/01

https://doi.org/10.1023/A:1022235916015
 Times Cited Count：5 Percentile：36.81(Chemistry, Analytical)

no abstracts in English

Journal Articles

Variation of $$^{14}$$C, $$^{137}$$Cs and stable carbon composition in forest soil and its implications

Guo, J.; Atarashi-Andoh, Mariko; Amano, Hikaru

Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.223 - 229, 2003/01

https://doi.org/10.1023/A:1022281226010
 Times Cited Count：7 Percentile：45.83(Chemistry, Analytical)

Soil organic matter content, $$delta$$$$^{13}$$C, $$^{14}$$C and $$^{137}$$Cs radioactivity were determined in 3 undisturbed forest soil profiles in Ibaraki prefecture, Japan to estimate $$^{14}$$C migration in surface environment. The $$^{137}$$Cs data illustrate that no disturbance has occurred during past years in 3 soil profiles. The peak values are observed in the top 10 cm of the soil profiles. $$^{14}$$C activities were determined with fast bomb combustion-liquid scintillation counting method. $$^{14}$$C determination shows that $$^{14}$$C also has peak values in the top 10 cm of the soil profiles ascribed to the highest bomb $$^{14}$$C level in 1960's.$$delta$$$$^{13}$$C values continuously decreased with increasing soil depth. Enrichment of deeper soils in isotope ratio probably results from discrimination against $$^{13}$$C during mineralization and loss of isotopically lighter carbon from soils due to root uptake, leaching etc.It shows that $$delta$$$$^{13}$$C is an excellent indicator of soil carbon turnover and belowground process.

Journal Articles

Neutron spectrum correction of k$$_{0}$$-factors for k$$_{0}$$-based neutron-induced prompt $$gamma$$-ray analysis

Matsue, Hideaki; Yonezawa, Chushiro

Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.125 - 129, 2003/01

https://doi.org/10.1023/A:1022244217832
 Times Cited Count：8 Percentile：49.89(Chemistry, Analytical)

no abstracts in English

Journal Articles

Depth profiles of long lived radionuclides in Chernobyl soils sampled around 10 years after the accident

Amano, Hikaru; Onuma, Yoshikazu*

Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.217 - 222, 2003/01

https://doi.org/10.1023/A:1022229209171
 Times Cited Count：8 Percentile：49.89(Chemistry, Analytical)

no abstracts in English

Journal Articles

New technique for the determination of trace elements using multiparameter coincidence spectrometry

Hatsukawa, Yuichi; Toh, Yosuke; Oshima, Masumi; Hayakawa, Takehito; Shinohara, Nobuo; Kushita, Kohei; Ueno, Takashi; Toyoda, Kazuhiro*

Journal of Radioanalytical and Nuclear Chemistry, 255(1), p.111 - 113, 2003/01

https://doi.org/10.1023/A:1022287900085
 Times Cited Count：12 Percentile：62.23(Chemistry, Analytical)

no abstracts in English

12 (Records 1-12 displayed on this page)
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