Selective ion exchange separation of uranium from concomitant impurities in uranium materials and subsequent determination of the impurities by ICP-OES

An overview of spectrometric techniques and sample preparation for the determination of impurities in uranium nuclear fuel grade

“…This effect can explain the good sensitivity obtained by this instrument [38,43,44]. However, the direct determination of trace level impurities in uranium nuclear fuel matrix, after a simple dissolution step, by ICP OES is not free of spectral interferences caused by the emission spectrum of high uranium concentration, matrix effects occur in uranium complex matrices and signal suppression and clogging of the nebulizer when the sample contains high dissolved solids concentration [5,[45][46][47][48]18]. Therefore, an efficient separation technique for the selective removal of uranium from the trace impurities is an essential precondition prior to sample introduction to obtain precise and accurate results [48].…”

The synergistic extraction of uranium ions from monazite leach solution via HFSLM and its mass transfer

“…Various separation methods [4] including extraction chromatography [5] selective precipitation [6] solvent extraction [7,8] ion exchange [9,10] and a combination of these [11,12] have been employed by many researchers for the separation of uranium.…”

Microwave assisted decoration of titanium oxide nanotubes with CuFe2O4 quantum dots for solid phase extraction of uranium

“…[19][20][21][22] The low concentrations of uranium in the real samples as well as the matrix interference hinder the determination of uranium by these techniques, so a separation/preconcentration step is required before the determination. For this purpose, various procedures have been used, such as solid-phase extraction (SPE), [11][12][13][14][15][16][17][18][19][20][21][22] liquid-liquid extraction, 23 cloud point extraction, 24 ion exchange, 25 otation 26 and extraction chromatography. 27 Solid phase extraction (SPE) has many advantages over the other separation procedures, including simplicity, higher enrichment factors, low cost, lower consumption of toxic chemicals.…”