Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
CO
and their fluxes from surface environment with a development of a simultaneous sampling system for the speciation of atmospheric H-3 and C-14Amano, Hikaru; Koarashi, Jun*; Koma, T.*; Atarashi-Andoh, Mariko; Iida, Takao*
JAERI-Conf 2003-010, p.221 - 225, 2003/09
Concerning atmospherically released tritium (T) and C-14 we have developed a new method, which can analyze their fluxes and the deposition velocities. Firstly, a simultaneous sampling system for the speciation of atmospheric tritium and C-14 has been developed. This system determines varieties of chemical forms of tritium and C-14, namely tritiated water (HTO), elemental tritium gas (HT) and tritiated methane (CH
T) for tritium, CO and 14C H4 for C-14, respectively. Secondly, a new method was developed to determine HT and CO deposition velocities. This method can determine their fluxes and the deposition velocities without any tritium and C-14 sources.
Koarashi, Jun; Amano, Hikaru; Atarashi-Andoh, Mariko; Iida, Takao*; Koma, T.*
Radiation Protection Dosimetry, 93(3), p.237 - 243, 2001/00
Times Cited Count：8 Percentile：52.3(Environmental Sciences)no abstracts in English
Koarashi, Jun; Amano, Hikaru; Atarashi-Andoh, Mariko; Koma, T.*
JAERI-Research 99-053, p.21 - 0, 1999/09
JAERI-Research-99-053.pdf:1.18MB
no abstracts in English
; ; ; ; ;
Journal of Nuclear Science and Technology, 18(4), p.261 - 274, 1981/00
Times Cited Count：4 Percentile：52.53(Nuclear Science & Technology)no abstracts in English
Tanaka, Takuro*; Saito, Takumi*; Toda, Kanako*; Fujiwara, Kenso; Terashima, Motoki; Nakanishi, Takahiro; Kobayashi, Natsuko*; Tanoi, Keitaro*
no journal, ,
Cs-137 dispersed by the Fukushima Daiichi Nuclear Power Plant accident deposited in Fukushima area, that are not decontaminated in mountainous areas, may migrate through river water to animals and plants. Most of Cs-137 in river are fixed in clay minerals, but there are some Cs that can be easily desorbed, named as labile components. It has been suggested that labile components affect the bioavailability of Cs-137. In this study, the labile Cs-137 was sampled in situ from upstream to downstream in several rivers of Fukushima using a passive sampler called diffusive gradients in thin films (DGT). Sampling was conducted at a different season in addition to the previous studies.
Cs in Fukushima rivers by diffusive gradients in thin films (DGT), 3; Relations between geochemical parametersTanaka, Takuro*; Saito, Takumi*; Toda, Kanako*; Fujiwara, Kenso; Terashima, Motoki; Nakanishi, Takahiro; Kobayashi, Natsuko*; Tanoi, Keitaro*; Kato, Hiroaki*
no journal, ,
Cs dispersed by the Fukushima Daiichi Nuclear Power Plant accident deposited in Fukushima area, that are not decontaminated in mountainous areas, may migrate through river water to animals and plants. Most of Cs in river are fixed in clay minerals, but there are some Cs that can be easily desorbed, named as labile components. It has been suggested that labile components affect the bioavailability of Cs. In this study, the labile Cs was sampled in situ from upstream to downstream in several rivers of Fukushima using a passive sampler called diffusive gradients in thin films (DGT). The desorption behavior of the labile component and factors affecting it will be discussed by examining the relationship with particulate Cs and geochemical parameters in river water.
