Separation of $PuO_2^{2+}$, $Pu^{4+}$ and $Pu^{3+}$ by Ion Chromatography

이온크로마토그래피에 의한 $PuO_2^{2+}$, $Pu^{4+}$$Pu^{3+}$의 분리

  • Published : 19990600

Abstract

Separation of plutonium species was studied by ion chromatography installed in a glove box for the determination of plutonium element. The plutonium species, $PuO_2^{2+},\; PC^{4+}\; and\; Pu^{3+}$, were stably separated on dynamically equilibrated cation exchanger using 1-octanesulfonate and ${\alpha}$-HiBA eluant after controlling the plutonium oxidation states with KI, $NaNO_2\;or=;KBrO_3$ based on the oxidation-reduction potentials. For the separation of plutonium from other matrix, $PuO_2^{2+}\; and\; Pu^{4+}$ were reduced to $Pu^{3+}$ with KI and $NaNO_2$ followed by cation exchange chromatography.

이온크로마토그래피를 이용하여 Pu 화학종의 분리방법을 검토하였다. 환원제(KI, $NaNO_2$) 또는 산화제(KBrO_3$)를 사용하여 Pu의 산화수를 조절한 후 1-octanesulfonate 와 ${\alpha}$-HiBA 용리액을 사용하는 동적계에서 $PuO_2^{2+},\; PC^{4+}$$Pu^{3+}$의 화학종을 각각 안정하게 개별분리하였다. Iodide와 nitrite를 동시에 사용하여 Pu 화학종들을 $Pu^{3+}$까지 환원한 다음 이온크로마토그래피로 안정하게 분리하였다.

Keywords

References

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