Separation and determination of the difficult-to-measure radionuclide 99Tc in radioactive wastes from nuclear power plants by using extraction chromatography and radiometric techniques

Temba, Eliane S. C.; Reis, Aluísio S.; Kastner, Geraldo Frederico; Monteiro, Roberto Pellacani Guedes; Moreira, Rubens Martins

doi:10.1007/s10967-015-4359-z

Cited by 7 publications

(1 citation statement)

References 18 publications

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“…The separation was performed by anion exchange chromatography and extraction chromatography using a TEVA resin. The determination of 99 Tc was carried out by LSC and rhenium was activated in the TRIGA Mark 1 research reactor and measured by gamma spectrometry by using a gamma spectrometer with hyper-pure germanium detector [18].…”

Section: Methodology For 99 Tc Determinationmentioning

confidence: 99%

Radiochemical Methodologies Applied to Analytical Characterization of Low and Intermediate Level Wastes from Nuclear Power Plants

Monteiro¹,

Reis

Kastner

et al. 2019

Braz. J. Rad. Sci.

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The aim of this work is to present radiochemical methodologies developed at CDTN/CNEN in order to answer a program for isotopic inventory of radioactive wastes from Brazilian Nuclear Power Plants. In this program some radionuclides, 3H, 14C, 55Fe, 59Ni, 63Ni, 90Sr, 93Zr, 94Nb, 99Tc, 129I, 235U, 238U, 238Pu, 239+240Pu, 241Pu, 242Pu, 241Am, 242Cm e 243+244Cm, were determined in Low Level Wastes (LLW) and Intermediate Level Wastes (ILW) and a protocol of analytical methodologies based on radiochemical separation steps and spectrometric and nuclear techniques was stablished.

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Section: Methodology For 99 Tc Determinationmentioning

confidence: 99%

Radiochemical Methodologies Applied to Analytical Characterization of Low and Intermediate Level Wastes from Nuclear Power Plants

Monteiro¹,

Reis

Kastner

et al. 2019

Braz. J. Rad. Sci.

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A review on the current status of dye‐sensitized solar cells: Toward sustainable energy

Korir,

Kibet,

Ngari

2024

Energy Science & Engineering

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Dye‐sensitized solar cells (DSSCs) are among the most attractive third‐generation photovoltaic technologies due to their low toxicity, versatility, roll‐to‐roll compatibility, ultralightness, and attractive power conversion efficiencies (PCEs). However, their transition from the laboratory scale to the industrial scale has been slow due to their inability to compete with silicon‐based cells in terms of efficiencies and stabilities. Research activities on DSSCs have been ongoing for several decades to improve the efficiency and cost‐effectiveness of photovoltaics but these attempts are still inadequate. Their chemical and physical properties must be refined to increase efficiency and commercialization. This review provides a concise overview of the recent advances taking place in the DSSCs research field, including molecular engineering technologies, the quest for superior carrier transport materials (CTMs), efficient sensitizers, and better electrodes. Also, this review compiles knowledge of the historical development of DSSCs, the current advancements such as control of surface morphologies, doping strategies, modeling and simulation, characterization, and recent cutting‐edge research happenings in photovoltaic research. Finally, nanostructured materials that have been used as photoelectrodes and the practical applications of DSSCs in internet of things (IoT) and portable electronics are examined to identify challenges and future advancements. The main aim of this work is to be a pathfinder for scientific researchers in this field exploring various energy harvesting materials and optimization strategies of different components of DSSCs.

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Determination of 94Nb in radioactive wastes using extraction chromatography and gamma spectrometry

Temba

Kastner

Reis

et al. 2017

J Radioanal Nucl Chem

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Separation and determination of the difficult-to-measure radionuclide 99Tc in radioactive wastes from nuclear power plants by using extraction chromatography and radiometric techniques

Cited by 7 publications

References 18 publications

Radiochemical Methodologies Applied to Analytical Characterization of Low and Intermediate Level Wastes from Nuclear Power Plants

Radiochemical Methodologies Applied to Analytical Characterization of Low and Intermediate Level Wastes from Nuclear Power Plants

A review on the current status of dye‐sensitized solar cells: Toward sustainable energy

Determination of 94Nb in radioactive wastes using extraction chromatography and gamma spectrometry

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