Fast method of XANES data collection suitable for oxidation state mapping

Bielewski, Marek; Eriksson, Mats; Himbert, Jérôme; Betti, M.; Belloni, F.; Falkenberg, Gerald

doi:10.1007/s10967-009-0242-0

Cited by 10 publications

(7 citation statements)

References 11 publications

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“…The authors finally minimized the beam damage by keeping the specimen at the temperature of liquid nitrogen (‐178 °C) during data collection. Bielewski et al suggested that long‐time exposure of actinides to SR would result in transformations of the oxidation state, and a fast method for XANES data collection would be more suitable for oxidation state mapping. Actually, radiation effects on actinide oxides and complexes by subjecting samples to a self‐irradiation field or an external radiation field of α, β or γ rays were well studied in the last decades.…”

Section: Resultsmentioning

confidence: 99%

Exploring Actinide Materials Through Synchrotron Radiation Techniques

et al. 2014

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Synchrotron radiation (SR) based techniques have been utilized with increasing frequency in the past decade to explore the brilliant and challenging sciences of actinide‐based materials. This trend is partially driven by the basic needs for multi‐scale actinide speciation and bonding information and also the realistic needs for nuclear energy research. In this review, recent research progresses on actinide related materials by means of various SR techniques were selectively highlighted and summarized, with the emphasis on X‐ray absorption spectroscopy, X‐ray diffraction and scattering spectroscopy, which are powerful tools to characterize actinide materials. In addition, advanced SR techniques for exploring future advanced nuclear fuel cycles dealing with actinides are illustrated as well.

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Section: Resultsmentioning

confidence: 99%

Exploring Actinide Materials Through Synchrotron Radiation Techniques

et al. 2014

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“…These effects are also considered in fundamental parameter models for quantitative XRF analysis. Bielewski et al 487 reported a fast XANES data collection method suitable for mapping oxidation states of actinides in environmental samples. This is a welcome improvement since the time required for conventional XANES data collection is unacceptably long.…”

Section: Chemical State and Speciationmentioning

confidence: 99%

Atomic spectrometry update–X-ray fluorescence spectrometry

West

Ellis

Potts

et al. 2010

J. Anal. At. Spectrom.

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“…Neither the normalized white line intensities nor the peak widths changed with repeated scans of the same 0.1 μm 2 area, but the normalized peak intensity did vary by approximately 10–20% between deposits (Figures 5a, 5b, and 5c), with more concentrated spots, for example spot A in Figure 5, typically giving less intense white lines than spots with less plutonium. The favorable counting statistics in the more concentrated Pu spots also makes rapid mapping of the Pu oxidation state feasible [16]. …”

Section: Resultsmentioning

confidence: 99%

“…A few X-ray microprobe studies of the elemental distribution and speciation of transuranic elements have been reported, but these studies have been principally conducted on inorganic samples with X-ray beams focused to 10 – 200 μm 2 spots [9–16]. In this work we report details of submicron (0.1 μm 2 ) hard X-ray SXFM studies of the accumulation and distribution of the transuranic element plutonium in a complex matrix, living cells.…”

Section: Introductionmentioning

confidence: 99%

Submicron hard X-ray fluorescence imaging of synthetic elements

Jensen

Aryal

Gorman‐Lewis

et al. 2012

Analytica Chimica Acta

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Synchrotron-based X-ray fluorescence microscopy (SXFM) using hard X-rays focused into sub-micron spots is a powerful technique for elemental quantification and mapping, as well as microspectroscopic measurement such as μ-XANES (X-ray absorption near edge structure). We have used SXFM to image and simultaneously quantify the transuranic element plutonium at the L3 or L2 edge as well as lighter biologically essential elements in individual rat pheochromocytoma (PC12) cells after exposure to the long-lived plutonium isotope 242Pu. Elemental maps reveal that plutonium localizes principally in the cytoplasm of the cells and avoids the cell nucleus, which is marked by the highest concentrations of phosphorus and zinc, under the conditions of our experiments. The minimum detection limit under typical acquisition conditions for an average 202 μm2 cell is 1.4 fg Pu/cell or 2.9 × 10−20 moles Pu/μm2, which is similar to the detection limit of K-edge SXFM of transition metals at 10 keV. Copper electron microscopy grids were used to avoid interference from gold X-ray emissions, but traces of strontium present in naturally occurring calcium can still interfere with plutonium detection using its Lα X-ray emission.

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Fast method of XANES data collection suitable for oxidation state mapping

Cited by 10 publications

References 11 publications

Exploring Actinide Materials Through Synchrotron Radiation Techniques

Exploring Actinide Materials Through Synchrotron Radiation Techniques

Atomic spectrometry update–X-ray fluorescence spectrometry

Submicron hard X-ray fluorescence imaging of synthetic elements

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