A rapid and efficient automated method for the sequential separation of plutonium and radiostrontium in seawater

Kim, Hyuncheol; Chung, Kun Ho; Jung, Youngim; Jang, Miran; Kang, Mun Ja; Choi, Geun-Sik

doi:10.1007/s10967-014-3595-y

Cited by 15 publications

(5 citation statements)

References 15 publications

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“…In the literature, 1 M HNO 3 , 3 M HNO 3 , and 8 M HNO 3 are most frequently used for sample loading and matrix washing on TEVA resin. − Our results showed that 8 M HNO 3 was unable to strip the most important interfering element U, although it could elute Bi and Hg which 1 and 3 M HNO 3 could not elute. The 1 M and 3 M HNO 3 did not show significant variations in the washing of IEs.…”

Section: Resultsmentioning

confidence: 66%

High-Performance Method for Determination of Pu Isotopes in Soil and Sediment Samples by Sector Field-Inductively Coupled Plasma Mass Spectrometry

Wang

Zheng

et al. 2017

Anal. Chem.

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Plutonium is extensively studied in radioecology (e.g., soil to plant transfer and radiological assessment) and geochemistry (e.g., sediment dating). Here, we reported a new chemical separation method for rapid determination of Pu in soil and sediment samples, based on the following investigations: extraction behaviors of interfering elements (IEs, for inductively coupled plasma mass spectrometry (ICPMS) measurement) on TEVA resin; decontamination of U using TEVA, UTEVA, and DGA resins; and the impact of coprecipitation on Pu determination. The developed method consists of four steps: HNO leaching for Pu release; CaF/LaF coprecipitation for the removal of major metals and U; the proposed TEVA + UTEVA + DGA procedure for the removal of U, Pb, Bi, Tl, Hg, Hf, Pt, and Dy; and ICPMS measurement. The accuracy of this method in determining Pu activity andPu/Pu and Pu/Pu isotopic ratios was validated by analyzing five standard reference materials (soil, fresh water sediment, and ocean sediment). This method is characterized by its stable and high Pu recovery (90-97% for soil; 92-98% for sediment) and high decontamination factor of U (1.6 × 10), which is the highest reported for soil and sediment samples. In addition, the short analytical time of 12 h and the method detection limits, which are the lowest yet reported in literature, of 0.56 μBq g (0.24 fg g) for Pu, 1.2 μBq g (0.14 fg g) for Pu, and 0.34 mBq g (0.09 fg g) for Pu (calculated on the basis of a 1 g soil sample) allow the rapid determination of ultratrace level Pu in soil and sediment samples.

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Section: Resultsmentioning

confidence: 66%

High-Performance Method for Determination of Pu Isotopes in Soil and Sediment Samples by Sector Field-Inductively Coupled Plasma Mass Spectrometry

Wang

Zheng

et al. 2017

Anal. Chem.

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“…The flexible connection of the two columns was realized via the use of a 10-port two-position injection valve (see Figure 6). An FI system was developed for the separation of 238 Pu and 90 Sr in seawater with the use of TEVA and Sr resin [54]. The sample was firstly loaded on the tandem TEVA/Sr resin; thereafter the Sr and TEVA column was manually switched in the system for further purification of 238 Pu and 90 Sr.…”

Section: Tandem-column Chromatographic Separationmentioning

confidence: 99%

Dynamic Flow Approaches for Automated Radiochemical Analysis in Environmental, Nuclear and Medical Applications

Qiao

2020

Molecules

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Automated sample processing techniques are desirable in radiochemical analysis for environmental radioactivity monitoring, nuclear emergency preparedness, nuclear waste characterization and management during operation and decommissioning of nuclear facilities, as well as medical isotope production, to achieve fast and cost-effective analysis. Dynamic flow based approaches including flow injection (FI), sequential injection (SI), multi-commuted flow injection (MCFI), multi-syringe flow injection (MSFI), multi-pumping flow system (MPFS), lab-on-valve (LOV) and lab-in-syringe (LIS) techniques have been developed and applied to meet the analytical criteria under different situations. Herein an overall review and discussion on these techniques and methodologies developed for radiochemical separation and measurement of various radionuclides is presented. Different designs of flow systems with combinations of radiochemical separation techniques, such as liquid–liquid extraction (LLE), liquid–liquid microextraction (LLME), solid phase extraction chromatography (SPEC), ion exchange chromatography (IEC), electrochemically modulated separations (EMS), capillary electrophoresis (CE), molecularly imprinted polymer (MIP) separation and online sensing and detection systems, are summarized and reviewed systematically.

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“…20−23 These custom built, automated systems use hand-packed or prepacked disposable columns to achieve separations. 17,18,21,22 Further advancements in technology led to BI, which scales up FI and SI using larger columns on even more complex separation schemes. 24,25 Unfortunately, these automated platforms are not yet commercially available.…”

mentioning

confidence: 99%

“…Mechanical systems are being explored to automate the chemistry to reduce personnel involvement. Some of these use fluid-handling techniques such as flow injection (FI), sequential injection (SI), and bead injection (BI) to control solution flow. − FI primarily automates very simple separation schemes and led to the development of SI, which allows for the control of additional functions such as renewable column generation. , As a result of these improvements, SI is able to separate more complex samples. ,, Many FI and SI systems have been described for small scale separation of trace metals and specific radiochemical analysis. − These custom built, automated systems use hand-packed or prepacked disposable columns to achieve separations. ,,, Further advancements in technology led to BI, which scales up FI and SI using larger columns on even more complex separation schemes. , Unfortunately, these automated platforms are not yet commercially available.…”

mentioning

confidence: 99%

Automated Separation of Uranium and Plutonium from Environmental Swipe Samples for Multiple Collector Inductively Coupled Plasma Mass Spectrometry

et al. 2018

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A fully automated method for the separation of low-concentration uranium from plutonium in environmental swipe samples has been developed. The offline chromatography system features renewable 1 mL Eichrom TEVA and UTEVA column generation from bulk resin slurry. Discrete fractions of the separated actinides are delivered into user defined vials for future analysis. Clean room background levels were achieved outside of a cleanroom environment with this method. Purification of uranium and plutonium from various sample matrixes and at various concentrations was successful. Major and minor isotope ratios for both elements were measured via multiple collector inductively coupled plasma mass spectrometry and were in good agreement with certified reference values. Validation of the separation method was conducted on archived environmental samples and agreed with values previously reported using standard column chemistry.

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A rapid and efficient automated method for the sequential separation of plutonium and radiostrontium in seawater

Cited by 15 publications

References 15 publications

High-Performance Method for Determination of Pu Isotopes in Soil and Sediment Samples by Sector Field-Inductively Coupled Plasma Mass Spectrometry

High-Performance Method for Determination of Pu Isotopes in Soil and Sediment Samples by Sector Field-Inductively Coupled Plasma Mass Spectrometry

Dynamic Flow Approaches for Automated Radiochemical Analysis in Environmental, Nuclear and Medical Applications

Automated Separation of Uranium and Plutonium from Environmental Swipe Samples for Multiple Collector Inductively Coupled Plasma Mass Spectrometry

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