Optimization of external (in air) particle induced gamma-ray emission (PIGE) methodology for rapid, non-destructive, and simultaneous quantification of fluorine, sodium, and phosphorus in nuclear waste immobilization matrices

Samanta, Sudeep Kumar; Das, P.; Sengupta, Arijit; Acharya, R.

doi:10.1039/d2ra06163e

RSC Adv.

2022

DOI: 10.1039/d2ra06163e

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Optimization of external (in air) particle induced gamma-ray emission (PIGE) methodology for rapid, non-destructive, and simultaneous quantification of fluorine, sodium, and phosphorus in nuclear waste immobilization matrices

Sudeep Kumar Samanta

P. Das

Arijit Sengupta

et al.

Abstract: External (in air) PIGE methodology has been optimized for rapid quantification of fluorine, sodium, and phosphorus in fluorapatite waste immobilization matrices for Molten Salt Reactor (MSR).

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2024

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Cited by 4 publications

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Comprehensive review of combustion ion chromatography for the analysis of total, adsorbable, and extractable organic fluorine

Shelor,

Warren,

Odinaka

et al. 2024

J of Separation Science

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Poly‐ and perfluoroalkyl substances (PFAS) are a class of persistent organic pollutants whose high stability and appreciable water solubility have led to near‐global contamination. PFAS are bioaccumulative toxins that have been linked to a myriad of disorders and have been detected nearly universally in human blood. Liquid chromatography‐tandem mass spectrometry is the most frequent method used for quantitation, though this typically only measures a few dozen of the >14 000 known PFAS and has been shown to account for a small portion of the total organic fluorine present. Sum parameter methods such as total, extractable, and adsorbable organic fluorine have emerged as alternative measurements for PFAS determination. Combustion ion chromatography has become the preferred method for organofluorine measurement where the sorbent or extract containing PFAS is combusted and the emitted hydrofluoric acid (HF) is a measure of the cumulative organofluorine present. Herein we critically review the types of organofluorine measurement, their separation from the sample matrix, and key parameters of the analytical instrument that affect sensitivity, reproducibility, and recovery with regards to PFAS analysis.

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Comprehensive review of combustion ion chromatography for the analysis of total, adsorbable, and extractable organic fluorine

Shelor,

Warren,

Odinaka

et al. 2024

J of Separation Science

View full text Add to dashboard Cite

show abstract

Improvements in the PIXE system of the CENTA laboratory with application in the contamination studies of tree rings in Slovakia

Kvasniak,

Ješkovský,

Zeman

et al. 2024

Nuclear Instruments and Methods in Physics Research Section B:

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Structure and Stability of Charge-Coupled Lanthanide-Substituted Ca₁₀(PO₄)₆F₂ as a Potential Fluoride Bearing Nuclear Waste Form

Das,

Vats,

Samui

et al. 2024

ACS Omega

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The structure and stability of charge-coupled lanthanide-substituted Ca 10 (PO 4 ) 6 F 2 as a potential fluoride-bearing nuclear waste form for the back-end fuel cycle of Gen-IV molten salt reactor have been studied in detail. Here, calcium fluorapatite (CaFAp) as a model structure was taken for incorporation of trivalent lanthanides (Lns, La−Lu except Pm) in a charge-coupled fashion, i.e., 2Ca 2+ = Na + + Ln 3+ . In these fluorapatite phases, Na + is substituted exclusively at nine coordinated sites, Ca1, while Ln 3+ is preferentially substituted at seven coordinated sites, Ca2. These compositions are further characterized for the local structure by Fourier transform infrared (FTIR) and Raman spectroscopy. Thermal expansion was measured by hightemperature X-ray diffraction (XRD) and the instantaneous thermal expansion coefficient correlates well with the unsubstituted CaFAp. The heat capacities of these solids were measured by differential scanning calorimetry and drop calorimetry, whereas enthalpies of formation were obtained by high-temperature oxide melt solution calorimetry. The thermodynamic analysis demonstrated that lanthanides having ionic radii closure to Ca 2+ (Sm 3+ and Gd 3+ ) imparted higher thermodynamic stability to the substituted CaFAp as compared to that of other Ln 3+ . According to structural and t h e r m o d y n a m i c i n v e s t i g a t i o n s , e n t r o p y -s t a b i l i z e d fl u o r a p a t i t e w a s t e f r o m NaPr 0.125 Nd 0.125 Sm 0.125 Eu 0.125 Gd 0.125 Tb 0.125 Dy 0.125 Ho 0.125 Ca 8 (PO 4 ) 6 F 2 (WF-Ln) was successfully synthesized for the first time. Furthermore, electron beam irradiation studies probed by XRD, FTIR, Raman, and X-ray absorption (XAS) spectroscopy implied the radiation resistance nature of this substituted CaFAps up to 20 MGy.

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Optimization of external (in air) particle induced gamma-ray emission (PIGE) methodology for rapid, non-destructive, and simultaneous quantification of fluorine, sodium, and phosphorus in nuclear waste immobilization matrices

Abstract: External (in air) PIGE methodology has been optimized for rapid quantification of fluorine, sodium, and phosphorus in fluorapatite waste immobilization matrices for Molten Salt Reactor (MSR).

Cited by 4 publications

References 36 publications

Comprehensive review of combustion ion chromatography for the analysis of total, adsorbable, and extractable organic fluorine

Comprehensive review of combustion ion chromatography for the analysis of total, adsorbable, and extractable organic fluorine

Improvements in the PIXE system of the CENTA laboratory with application in the contamination studies of tree rings in Slovakia

Structure and Stability of Charge-Coupled Lanthanide-Substituted Ca₁₀(PO₄)₆F₂ as a Potential Fluoride Bearing Nuclear Waste Form

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Optimization of external (in air) particle induced gamma-ray emission (PIGE) methodology for rapid, non-destructive, and simultaneous quantification of fluorine, sodium, and phosphorus in nuclear waste immobilization matrices

Abstract: External (in air) PIGE methodology has been optimized for rapid quantification of fluorine, sodium, and phosphorus in fluorapatite waste immobilization matrices for Molten Salt Reactor (MSR).

Cited by 4 publications

References 36 publications

Comprehensive review of combustion ion chromatography for the analysis of total, adsorbable, and extractable organic fluorine

Comprehensive review of combustion ion chromatography for the analysis of total, adsorbable, and extractable organic fluorine

Improvements in the PIXE system of the CENTA laboratory with application in the contamination studies of tree rings in Slovakia

Structure and Stability of Charge-Coupled Lanthanide-Substituted Ca10(PO4)6F2 as a Potential Fluoride Bearing Nuclear Waste Form

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Product

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About

Structure and Stability of Charge-Coupled Lanthanide-Substituted Ca₁₀(PO₄)₆F₂ as a Potential Fluoride Bearing Nuclear Waste Form