Design of Microchannel Suitable for Packing with Anion Exchange Resins: Uranium Separation from Seawater Containing a Large Amount of Cesium

We present a resin-packed microchannel that can reduce the radiation exposure risk and secondary radioactive wastes during uranium (U) separation by downscaling the separation using a microchip. Two types of microchips were designed to densely pack the microchannels with resins. The microchannels ha...

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Bibliographic Details
Published in:Analytical Sciences 2021/12/10, Vol.37(12), pp.1789-1794
Main Authors: OUCHI, Kazuki, TSUKAHARA, Takehiko, BRANDT, Aileen, MUTO, Yoshiki, NABATAME, Nozomi, KITATSUJI, Yoshihiro
Format: Article
Language:English
Subjects:
Analytical Chemistry
Anion exchange
Anion Exchange Resins
Anion exchanging
Cesium
Chemical analysis
Chemistry
design of microchannel
Inductively coupled plasma mass spectrometry
Integrated circuits
Mass spectrometry
Mass spectroscopy
Microchannels
Radiation
Radiation effects
Radioactive wastes
Resin-packed microchannel
Resins
Seawater
Separation
Uranium
Uranium - analysis
uranium separation
Water analysis
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Summary:We present a resin-packed microchannel that can reduce the radiation exposure risk and secondary radioactive wastes during uranium (U) separation by downscaling the separation using a microchip. Two types of microchips were designed to densely pack the microchannels with resins. The microchannels had almost the same cross-sectional area, but different outer circumferences. A satisfactory separation performance could be obtained by arranging more than ca. 10 resins along the depth and width of the microchannels. A resin-packed microchannel is an effective separation technique for determining the U concentration via inductively coupled plasma mass spectrometry owing to its ability to avoid the contamination of equipment by cesium, and to reduce the matrix effect. The size of the separation site was scaled down to
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.21P110