Development of an extraction chromatography method for the analysis of Zr, Nb, and Mo in radioactive contaminated water generated at the Fukushima Daiichi Nuclear Power Station

福島第一原子力発電所で発生した汚染水に含まれるZr, NbとMoの分析のための抽出クロマトグラフィー法の開発

島田 亜佐子 ; 亀尾 裕 

Shimada, Asako; Kameo, Yutaka

A new mutual separation method was developed to enable the analysis of Zr, Nb, and Mo in radioactive contaminated water from the Fukushima Daiichi Nuclear Power Station (FDNPS). First, distribution coefficient ( ) values between Tetra Valent Actinide (TEVA) resin, and HF, HF/HNO, and HF/HCl solutions were obtained to select the conditions for chromatographic separation. The separation performance of the developed method was validated with a control sample, which contained elements that could be interfere with the measurement of Zr, Nb, and Mo, (Cr, Co, Ni, Ge, and Se) and non-radioactive elements of high-dose nuclides in the contaminated water (Cs, Sr, and Y). The scheme was also evaluated with a simulated seawater sample because seawater was injected into the damaged reactors to assist cooling in the early stages of reactor failure. Finally, the chromatographic separation method was applied to the analysis ofZr, Nb, and Mo in contaminated water sampled at the FDNPS.