Analysis of impurities in uranium ore concentrates using hand-held Raman spectroscopy

西脇 大貴; 木村 祥紀  ; 山口 知輝 

Nishiwaki, Hiroki; Kimura, Yoshiki; Yamaguchi, Tomoki

The spectra of seven types of industrially produced uranium ore concentrates were obtained using a hand-held Raman spectrometer. From the Raman spectra of several ammonium diuranates, the peak in the range of 806-827 cm and around 10 cm were identified uranyl ions and sulfate. The sulfates were impurities derived from the acid used in the manufacturing process. No significant differences were observed in the Raman spectra of two ammonium diuranatse samples made from ore or seawater. Thus, the Raman spectra measured by the hand-held type were more strongly influenced by the manufacturing process than the property of raw material.