Trennung von Radioisotopen mit Ionenaustauscher-membranen I : Konzentrierung von Y-90 aus einer Sr-90-Y-90 Losung
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概要
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Es gibt in der Literatur Berichte uber die Behandlung von radioaktiven Abfallen mit Ionenaustauschermembranen ; Beispiele von der Anwendung solcher Membranen fur die Trennung radioaktiver Nuklide jedoch sind nicht vorhanden. Die Verfasser der vorliegenden Arbeit haben die Konzentrierung von Y-90 aus einer Ausgangs-Sr-90-Y-90-Losung (im Gleichgewicht) untersucht. Es wurde festgestellt, da〓 Y-90 in einer schwefelsauren Losung durch eine Anionenaustauschermembrane diffundiert. Das Verhalten von Sr-89 gegenuber Ionenaustauschermembranen in verschiedenen Losungen wurde untersucht. Die Konzentrierung von Y-90 wurde unter den so ermittelten optimalen Bedingungen aus einer im Gleichgewichtszustand befindlichen Sr-90-Y-90-Losung durchgefuhrt. Aus den Versuchen mit Sr-89 wurde gefunden, da〓 es in einer wa〓rigen Losung mit einer Wasserstoffionenkonzentration von 10^<-3> mol/l oder in einer NH_4Cl-HCl-Pufferlosung von pH 3.0 nicht durch eine Anionenaustauschermembrane diffundiert. Dem gegenuber wurde festgestellt, da〓 Y-90 aus einer Sr-90-Y-90-Losung wohl diffundiert. Die radio-chemische Reinheit des so gewonnenen Y-90 betragt uber 99%. Die Wanderungsge-schwindigkeit des radioaktiven Nuklids wird durch die elektrische Stromstarke, die Stromstarke durch die Gesamt-Ionenkonzentration der Losung beeinflu〓t. Die Y-90-Ausbeute ist folglich nicht von der primaren Y-90-Konzentration abhangig, sie wird durch die Stromstarke bestimmt.
- 東北大学の論文
著者
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SUZUKI Shin
The Research Institute for Iron, Steel and Other Metals
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GOTO Hidehiro
Forschungsinstitut fur Eisen, Stahl und andere Metalle
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SUZUKI Shin
Forschungsinstitut fur Eisen, Stahl und andere Metalle
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SAITO Makoto
Forschungsinstitut fur Eisen, Stahl und andere Metalle
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Suzuki Shin
The Research Institute For Iron Steel And Other Metals
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Saito Makoto
Department Of Chemistry College Of General Education Tohoku University
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GOTO H.
The Research Institute for Iron, Steel and Other Metals
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Goto H.
Forschungsinstitut fur Eisen, Stahl und andere Metalle
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