N. Raje et al., Preconcentration of natural protactinium (Pa-231) from monazite on Dowex IX8 and subsequent determination by gamma-spectrometry, J RAD NUCL, 247(1), 2001, pp. 115-120
A simple and efficient method has been developed to preconcentrate natural
protactinium from large quantity of monazite (5-10 g) and thorium concentra
tes (5-100 g), obtained from thorium plant stream on Dowex 1X8 in acid medi
um. Gamma-spectrometry, a powerful determination technique, has been used f
or quantitative determination of protactinium and uranium Various parameter
s like sample preparation, optimization of the resin and sample size for Pa
-231 recovery, Pa-231/U-235 ratio have been studied in detail and are discu
ssed.