Abstract:Presented here is a novel automated method for determining the trace element composition of bulk thorium by inductively coupled plasma–optical emission spectroscopy (ICP-OES). ICP-OES is a universal approach for measuring the trace elemental impurities present in actinide-rich materials; however, due to the emission rich spectrum of the actinide, a separation from the trace elements is warranted for spectrochemical analysis. Here, AG MP-1 ion exchange resin was utilized for retention of the Th matrix, while al… Show more
“…[1][2][3][4] Automation has been increasingly explored in nuclear laboratories as a way of increasing sample throughput and minimizing personnel radiation exposure. 5 Our laboratory has placed an emphasis on automated and rapid analytical methods for analyzing trace elements in bulk uranium/thorium samples, [6][7][8][9] analyzing trace ssion products in a variety of complex radiological matrices, [10][11][12][13] and separating U and Pu in environmental swipe samples. 14 Particle analysis methods, utilized in a host of nonproliferation and safeguards activities, are also being improved by automation.…”
An automated microextraction method coupled to an inductively coupled plasma – mass spectrometer (ICP-MS) was developed for the direct analysis of solid uranium particulates on the surface of cotton swipes....
“…[1][2][3][4] Automation has been increasingly explored in nuclear laboratories as a way of increasing sample throughput and minimizing personnel radiation exposure. 5 Our laboratory has placed an emphasis on automated and rapid analytical methods for analyzing trace elements in bulk uranium/thorium samples, [6][7][8][9] analyzing trace ssion products in a variety of complex radiological matrices, [10][11][12][13] and separating U and Pu in environmental swipe samples. 14 Particle analysis methods, utilized in a host of nonproliferation and safeguards activities, are also being improved by automation.…”
An automated microextraction method coupled to an inductively coupled plasma – mass spectrometer (ICP-MS) was developed for the direct analysis of solid uranium particulates on the surface of cotton swipes....
“…The separation method of Th and/or U from environmental samples based on automatic systems has drawn researchers' interests in recent years. 22,23,[27][28][29][30] Miyamoto et al 23 sequentially separated ultra-trace U, Th, Pb, and lanthanides using an automatic system integrated with an anion-exchange resin MCI-GEL. Th and U were sequentially eluted with 12 M CH 3 COOH-1 M HCl-0.1 M HF and 0.2 M HCl-1 M HF, respectively, to reach nearly quantitative recoveries of Th and U. Higginson et al 27 conducted a radiochemical analysis of trace actinides, including Am/Cm, Np, Pu, and U through UTEVA resin.…”
Section: Performances Of the Automated Separation Methodsmentioning
High efficient analysis of Th and U isotopes were important technique issues encountered in the fields such as environment monitoring and nuclear emergency responses. Here we proposed a novel automated...
“…[4][5][6] Trace elemental analysis by each technique is generally performed by diluting samples such that the U matrix is low, and matrix matching the calibration standards, 1 or separating the matrix completely. 7 ICP-OES analytical data comes from the emission spectra of elements excited within a plasma with temperatures as high as 10 000 K. The ICP-OES method measures photons, rather than ICP-MS which measures ions of specic mass and is limited by emission rich f-block elements (e.g., U and Pu), which could interfere with trace element spectra.…”
Section: Introductionmentioning
confidence: 99%
“…Thus, separation technologies including solvent extraction and ion exchange chromatography have been developed to minimize spectral interferences resulting from high concentrations of U relative to the trace elements. [7][8][9][10][11][12][13][14][15] Recent efforts have focused on minimizing sample size, reducing method time, and automation to improve these highly effective separations. 2 Separations are generally assumed to be the superlative way to obtain quality ICP-OES results for each element at all trace-level concentrations.…”
Partial least squares regression models were optimized for the quantification of trace elements including lanthanides (e.g., Ce, Nd), transition metals (e.g., Fe, Cr, Ni, Zr), post-transition metals (e.g., Al, Pb),...
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