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   Articles with "thermal ionization" as a keyword



Uranium age-dating using in-situ isotope ratios by thermal ionization mass spectrometry for nuclear forensics

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recommendations! Published in 2017 at "Journal of Radioanalytical and Nuclear Chemistry"

DOI: 10.1007/s10967-017-5379-7

Abstract: The model dates of two enriched uranium materials were determined using a new method for nuclear forensics investigation. In this method, without spike addition, the 230Th/234U ratio was calculated from the measured ratios of 230Th/234Th… read more here.

Keywords: date; ionization mass; nuclear forensics; thermal ionization ... See more keywords

Direct Quantification of Attogram Levels of Strontium-90 in Microscale Biosamples Using Isotope Dilution-Thermal Ionization Mass Spectrometry Assisted by Quadrupole Energy Filtering.

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recommendations! Published in 2023 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.2c04844

Abstract: Although thermal ionization mass spectrometry (TIMS) has been employed for the high-precision analysis of isotope ratios, direct quantification of artificial mono-nuclide in the environment is difficult by even using isotope dilution (ID) due to the… read more here.

Keywords: quantification; thermal ionization; mass spectrometry; direct quantification ... See more keywords

Precise Determination of Cd Isotope Ratios at 3-10 ng Level by Thermal Ionization Mass Spectrometry Using a Molybdenum Silicide Emitter.

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recommendations! Published in 2024 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.4c03362

Abstract: Thermal ionization mass spectrometry (TIMS) combined with the double spike technique has excellent analytical precision for Cd isotopic ratio analysis. However, because of the low ionization efficiency of Cd by TIMS, it is still not… read more here.

Keywords: thermal ionization; mass spectrometry; ionization mass; emitter ... See more keywords

Anion-Exchange Fibers for Improved Sample Loading in Ultra-Trace Analysis of Plutonium by Thermal Ionization Mass Spectrometry.

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recommendations! Published in 2017 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.7b01455

Abstract: A new sample loading procedure was developed for isotope ratio measurements of ultratrace amounts of plutonium with thermal ionization mass spectrometry (TIMS). The goal was to determine the efficacy of a polymer fiber architecture for… read more here.

Keywords: mass spectrometry; plutonium thermal; ionization mass; thermal ionization ... See more keywords

Plutonium Isotope Ratio Measurements by Total Evaporation - Thermal Ionization Mass Spectrometry (TE-TIMS): An Evaluation of Uncertainties Using Traceable Standards from New Brunswick Laboratory

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recommendations! Published in 2025 at "Journal of Analytical Atomic Spectrometry"

DOI: 10.1039/d5ja00140d

Abstract: Factors on which the accuracy and precision realized in isotope amount ratio measurements using thermal ionization mass spectrometry (TIMS) instrumentation are described, and the measurement of Pu materials is emphasized.... read more here.

Keywords: thermal ionization; spectrometry; mass spectrometry; ratio measurements ... See more keywords