Investigation on the use of UTEVA as a stationary phase for chromatographic separation of actinides on-line to inductively coupled plasma mass spectrometry

Development of Rapid Plutonium Analysis for Environmental Samples by Isotope Dilution/Inductively Coupled Plasma Mass Spectrometry with On-line Column

“…Various rapid Pu separation methods for environmental samples using an extraction chromatographic resin, such as UTEVA resin, or an anion-exchange resin disk, have been reported. [2][3][4]10,13,[16][17][18][19] The typical time required for separation by these methods was over 1 h. When the eluate contained constituents to interfere with an ICP-MS system, the eluate evaporated up to dryness, and the residue was again dissolved in a solution suitable for introducing to the ICP-MS system. It took an additional hour or more.…”

“…1 Since the most likely valance states of Pu and U in the solution are tetravalent and hexavalent, respectively, 15 both elements are retained in the resin. Since Pu(III) desorbs from the UTEVA resin, 16,18 reducing Pu to the trivalent state, but retaining U in the tetravalent state, is an effective method for the separation of Pu from U. Various reagents can reduce Pu to the trivalent state and keep U as tetravalent, e.g.…”

“…Various reagents can reduce Pu to the trivalent state and keep U as tetravalent, e.g. ammonium iodide, 16 iron(II) sulfate, 16 sodium sulfite, 16 Ti(III) chloride 17 and ascorbic acid. 16,18 We selected ascorbic acid because it reduces Pu very rapidly.…”

Critical comparison of radiometric and mass spectrometric methods for the determination of radionuclides in environmental, biological and nuclear waste samples

“…Benkhedda et al [59] reported an automated analytical method for the determination of 226 There are many works have been carried out on the development of an automated method for the determination of actinides [292,[296][297][298][299][300][301][302][303]]. An HPLC with mix bed ion exchange column has been used to separate actinides and employing ICP-MS used for the detection.…”

“…For the separation of Np from Pu, an extraction chromatographic column (UTEVA) was investigated. After adjusting Pu to Pu(IV) and Np to Np(V), these two elements can be completely separated by this method [302]. Extraction chromatographic resin TRU in the sequential injection system has been used for the separation of Am and Pu from the matrix and from each other.…”