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FAN YUANFA FAN ZHICAO (China Institute of Atomte Euergy. P.O. Box 275. beijing. 102113). SEPARATION AND DETERMINATION OF NEPTUNIUM BY N-235 EXTRACTION CHROMATOGRAPHY[J]. Atomic Energy Science and Technology, 1992, 26(5): 70-70. DOI: 10.7538/yzk.1992.26.05.0070
Citation: FAN YUANFA FAN ZHICAO (China Institute of Atomte Euergy. P.O. Box 275. beijing. 102113). SEPARATION AND DETERMINATION OF NEPTUNIUM BY N-235 EXTRACTION CHROMATOGRAPHY[J]. Atomic Energy Science and Technology, 1992, 26(5): 70-70. DOI: 10.7538/yzk.1992.26.05.0070
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SEPARATION AND DETERMINATION OF NEPTUNIUM BY N-235 EXTRACTION CHROMATOGRAPHY

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  • The separation of neptunium from uranium, plutonium, americium and europium is proposed by extraction chromatographic technique. N-235 is used as the stationary phase on polytetrafluoroethylcue powder. Neptunium is fixed from 2.0 mol·1 ~1HNO_3 solution. After washing the column with 1.0 mol·1 ~(-1)HNO_3 solution, neptunium is eluted with a nitric-oxalic acid mixture. The recoveries are 98.1 ±2.6％.
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