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Development of extraction chromatographic adsorbent using alkylpyridinedicarboxyamides as extractant for separation of trivalent minor actinides from lanthanides; Stability and separation ability against nitric acid exposure and $$gamma$$-ray irradiation

Arisaka, Makoto ; Watanabe, Masayuki  ; Sugo, Yumi; Kobayashi, Kumiko*; Kanao, Osamu*; Kimura, Takaumi 

Toward the development of a practical separation method for trivalent actinides and lanthanides, we used extraction chromatography with alkyl-pyridinedicarboxyamides as the extractant. The results confirmed that the performance degradation of the adsorbent caused by contact with HNO$$_{3}$$ and/or irradiation with $$gamma$$ rays would be very small during the operation of column chromatography. The optimal conditions for the column separation were also determined: eluent, 5M HNO$$_{3}$$; flow rate, 0.1 mL/min.

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Category:Nuclear Science & Technology

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