Matrix effects in plutonium isotope ratio measurements using thermal ionization mass spectrometry

Kattathu Joseph Mathew; Chelsea Ottenfeld; Steven Levesque; Russ Keller

doi:10.1007/s10967-021-08170-4

Matrix effects in plutonium isotope ratio measurements using thermal ionization mass spectrometry

Kattathu Joseph Mathew, Chelsea Ottenfeld, Steven Levesque, Russ Keller

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Through high fidelity measurements of four different plutonium certified reference material standards from New Brunswick Laboratory, the mass fractionation correction factor for the ²⁴⁰Pu/²³⁹Pu major isotope ratio measurements by the total evaporation methodology using thermal ionization mass spectrometer instruments is shown to depend on the elapsed time since separation of the decay products from the analyzed plutonium fraction. Systematic biases arising from this matrix dependence of the mass fractionation correction factor are larger than the precision obtained in routine TE measurements of the ²⁴⁰Pu/²³⁹Pu major isotope ratio using thermal ionization mass spectrometry regarded as the gold standard for these measurements. LA-UR-21–21,941.

Original language	English
Pages (from-to)	1005-1017
Number of pages	13
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume	331
Issue number	2
DOIs	https://doi.org/10.1007/s10967-021-08170-4
State	Published - Feb 2022
Externally published	Yes

Funding

Actinide Analytical Chemistry management support is thankfully acknowledged.

Keywords

Certified reference materials
Isotope ratio measurements
Matrix effects
Nuclear forensics
Nuclear fuel cycle
Thermal ionization mass spectrometry

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10.1007/s10967-021-08170-4

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title = "Matrix effects in plutonium isotope ratio measurements using thermal ionization mass spectrometry",

abstract = "Through high fidelity measurements of four different plutonium certified reference material standards from New Brunswick Laboratory, the mass fractionation correction factor for the 240Pu/239Pu major isotope ratio measurements by the total evaporation methodology using thermal ionization mass spectrometer instruments is shown to depend on the elapsed time since separation of the decay products from the analyzed plutonium fraction. Systematic biases arising from this matrix dependence of the mass fractionation correction factor are larger than the precision obtained in routine TE measurements of the 240Pu/239Pu major isotope ratio using thermal ionization mass spectrometry regarded as the gold standard for these measurements. LA-UR-21–21,941.",

keywords = "Certified reference materials, Isotope ratio measurements, Matrix effects, Nuclear forensics, Nuclear fuel cycle, Thermal ionization mass spectrometry",

author = "Mathew, {Kattathu Joseph} and Chelsea Ottenfeld and Steven Levesque and Russ Keller",

note = "Publisher Copyright: {\textcopyright} 2022, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.",

year = "2022",

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doi = "10.1007/s10967-021-08170-4",

language = "English",

volume = "331",

pages = "1005--1017",

journal = "Journal of Radioanalytical and Nuclear Chemistry",

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T1 - Matrix effects in plutonium isotope ratio measurements using thermal ionization mass spectrometry

AU - Mathew, Kattathu Joseph

AU - Ottenfeld, Chelsea

AU - Levesque, Steven

AU - Keller, Russ

PY - 2022/2

Y1 - 2022/2

N2 - Through high fidelity measurements of four different plutonium certified reference material standards from New Brunswick Laboratory, the mass fractionation correction factor for the 240Pu/239Pu major isotope ratio measurements by the total evaporation methodology using thermal ionization mass spectrometer instruments is shown to depend on the elapsed time since separation of the decay products from the analyzed plutonium fraction. Systematic biases arising from this matrix dependence of the mass fractionation correction factor are larger than the precision obtained in routine TE measurements of the 240Pu/239Pu major isotope ratio using thermal ionization mass spectrometry regarded as the gold standard for these measurements. LA-UR-21–21,941.

AB - Through high fidelity measurements of four different plutonium certified reference material standards from New Brunswick Laboratory, the mass fractionation correction factor for the 240Pu/239Pu major isotope ratio measurements by the total evaporation methodology using thermal ionization mass spectrometer instruments is shown to depend on the elapsed time since separation of the decay products from the analyzed plutonium fraction. Systematic biases arising from this matrix dependence of the mass fractionation correction factor are larger than the precision obtained in routine TE measurements of the 240Pu/239Pu major isotope ratio using thermal ionization mass spectrometry regarded as the gold standard for these measurements. LA-UR-21–21,941.

KW - Certified reference materials

KW - Isotope ratio measurements

KW - Matrix effects

KW - Nuclear forensics

KW - Nuclear fuel cycle

KW - Thermal ionization mass spectrometry

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SP - 1005

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JO - Journal of Radioanalytical and Nuclear Chemistry

JF - Journal of Radioanalytical and Nuclear Chemistry

IS - 2

ER -

Matrix effects in plutonium isotope ratio measurements using thermal ionization mass spectrometry

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