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Ban, Yasutoshi; Kikutani, Yoshikuni*; Tokeshi, Manabu*; Morita, Yasuji
Journal of Nuclear Science and Technology, 48(10), p.1313 - 1318, 2011/10
Times Cited Count：28 Percentile：88.5(Nuclear Science & Technology)Extraction of Am(III) was performed at the interface of organic-aqueous two-phase flows in a microchannel having an asymmetric cross section. A solution of 3 mol/dm
nitric acid containing 
Am(III) and octyl(phenyl)-N,N-diisobutylcarbamoylmethyl-phosphineoxide diluted with n-dodecane were introduced into the microchannel as the aqueous phase and the organic phase, respectively. The two phases formed a stable two-layer flow with an interface parallel to the sidewall of the microchannel, and were separated from each other at the divergence point of the microchannel. The extraction reaction of Am(III) proceeded at the interface of the two phase, and reached equilibrium state while the two phases passed through the microchannel.
Hotokezaka, Hiroyasu*; Ban, Yasutoshi; Ikeda, Hidematsu*; Harada, Masayuki*; Mizuguchi, Koji*; Saso, Michitaka*; Sugai, Hiroshi*; Tokeshi, Manabu*; Ikeda, Yasuhisa*; Morita, Yasuji; et al.
no journal, ,
The following items were studied for developing innovative equipment for analysis that provides high-sensitivity and rapid analysis for ultra small amount of samples utilizing microchip and thermal lens detector: Optimum flow condition for forming two-phase steady laminar flow in micro channel, applicability of thermal lens detector for U(VI) and H
concentration analysis, extraction properties of U(VI) from aqueous phase to organic phase in micro channel, and radiation resistance of microchips and capillary tubes. In this presentation the summary of these items are reported.
Ban, Yasutoshi; Morita, Yasuji; Kikutani, Yoshikuni*; Harada, Masayuki*; Ikeda, Yasuhisa*; Tokeshi, Manabu*
no journal, ,
Extraction of Np with TODGA has been performed using microchemical chips which have micro channels of several 10's 
m in depth and several 100's m in width as reaction field in a glass plate (L
WT; 70 mm 30 mm 1.4 mm). By using a microchannel of unsymmetrical shape and adjusting back pressure to the aqueous phase, Nd was effectively extracted at laminar flow interface between the organic phase and the aqueous phase, and the organic phase after Nd extraction separated from the aqueous phase very well.
