Independent measurements of 129I content in environmental reference materials using accelerator and thermal ionization mass spectrometry

J. E. Olson; M. L. Adamic; D. C. Snyder; J. L. Brookhart; P. A. Hahn; M. G. Watrous

doi:10.1016/j.nimb.2018.07.018

Independent measurements of ¹²⁹I content in environmental reference materials using accelerator and thermal ionization mass spectrometry

J. E. Olson, M. L. Adamic, D. C. Snyder, J. L. Brookhart, P. A. Hahn, M. G. Watrous

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

7 Scopus citations

Abstract

Iodine environmental measurement programs are in need of new materials with certified ¹²⁹I activity. Frequently ¹²⁹I measurements are validated in the literature using the standard material IAEA-375, Chernobyl soil, which is the only soil/sediment material with a recommended ¹²⁹I activity. IAEA-375 has not been available for purchase since 2010. This study is an extension of previous work at INL to include four additional standard materials that are commercially available (NIST materials: RM 8704, Buffalo River sediment, SRM 2710a, Montana I soil, and IAEA materials: SL-1, lake sediment, IAEA-385, Irish Sea sediment). These materials have certified or recommended activities for a variety of radionuclides but not for ¹²⁹I. This paper reports a comparison of accelerator mass spectrometry (AMS) and thermal ionization mass spectrometry (TIMS) data for ¹²⁹I activity, as well as the ^129/127I ratios for these standards to assist in identifying a suitable alternative for IAEA-375. Two independent chemical separation and mass spectrometric analysis techniques have been applied in an effort to corroborate the data. Both methods were validated via analyses of IAEA-375 for ¹²⁹I and show good agreement with the recommended activity of 1.7 × 10⁻³ Bq kg⁻¹ for ¹²⁹I; (1.6 × 10⁻³ Bq kg⁻¹ by AMS and 1.8 × 10⁻³ Bq kg⁻¹ by TIMS) with both sets of results within the 95% confidence interval of the recommended value.

Original language	English
Pages (from-to)	84-88
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	438
DOIs	https://doi.org/10.1016/j.nimb.2018.07.018
State	Published - Jan 1 2019

Keywords

129I
AMS
Accelerator mass spectrometry
Iodine
Reference materials
Standards
TIMS

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10.1016/j.nimb.2018.07.018

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Olson, J. E., Adamic, M. L., Snyder, D. C., Brookhart, J. L., Hahn, P. A., & Watrous, M. G. (2019). Independent measurements of ¹²⁹I content in environmental reference materials using accelerator and thermal ionization mass spectrometry. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 438, 84-88. https://doi.org/10.1016/j.nimb.2018.07.018

@article{88340e13534d4698be30beee4813b362,

title = "Independent measurements of 129I content in environmental reference materials using accelerator and thermal ionization mass spectrometry",

abstract = "Iodine environmental measurement programs are in need of new materials with certified 129I activity. Frequently 129I measurements are validated in the literature using the standard material IAEA-375, Chernobyl soil, which is the only soil/sediment material with a recommended 129I activity. IAEA-375 has not been available for purchase since 2010. This study is an extension of previous work at INL to include four additional standard materials that are commercially available (NIST materials: RM 8704, Buffalo River sediment, SRM 2710a, Montana I soil, and IAEA materials: SL-1, lake sediment, IAEA-385, Irish Sea sediment). These materials have certified or recommended activities for a variety of radionuclides but not for 129I. This paper reports a comparison of accelerator mass spectrometry (AMS) and thermal ionization mass spectrometry (TIMS) data for 129I activity, as well as the 129/127I ratios for these standards to assist in identifying a suitable alternative for IAEA-375. Two independent chemical separation and mass spectrometric analysis techniques have been applied in an effort to corroborate the data. Both methods were validated via analyses of IAEA-375 for 129I and show good agreement with the recommended activity of 1.7 × 10−3 Bq kg−1 for 129I; (1.6 × 10−3 Bq kg−1 by AMS and 1.8 × 10−3 Bq kg−1 by TIMS) with both sets of results within the 95% confidence interval of the recommended value.",

keywords = "129I, AMS, Accelerator mass spectrometry, Iodine, Reference materials, Standards, TIMS",

author = "Olson, {J. E.} and Adamic, {M. L.} and Snyder, {D. C.} and Brookhart, {J. L.} and Hahn, {P. A.} and Watrous, {M. G.}",

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year = "2019",

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day = "1",

doi = "10.1016/j.nimb.2018.07.018",

language = "English",

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Olson, JE, Adamic, ML, Snyder, DC , Brookhart, JL, Hahn, PA & Watrous, MG 2019, 'Independent measurements of ¹²⁹I content in environmental reference materials using accelerator and thermal ionization mass spectrometry', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 438, pp. 84-88. https://doi.org/10.1016/j.nimb.2018.07.018

Independent measurements of ¹²⁹I content in environmental reference materials using accelerator and thermal ionization mass spectrometry. / Olson, J. E.; Adamic, M. L.; Snyder, D. C. et al.
In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 438, 01.01.2019, p. 84-88.

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

TY - JOUR

T1 - Independent measurements of 129I content in environmental reference materials using accelerator and thermal ionization mass spectrometry

AU - Olson, J. E.

AU - Adamic, M. L.

AU - Snyder, D. C.

AU - Brookhart, J. L.

AU - Hahn, P. A.

AU - Watrous, M. G.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Iodine environmental measurement programs are in need of new materials with certified 129I activity. Frequently 129I measurements are validated in the literature using the standard material IAEA-375, Chernobyl soil, which is the only soil/sediment material with a recommended 129I activity. IAEA-375 has not been available for purchase since 2010. This study is an extension of previous work at INL to include four additional standard materials that are commercially available (NIST materials: RM 8704, Buffalo River sediment, SRM 2710a, Montana I soil, and IAEA materials: SL-1, lake sediment, IAEA-385, Irish Sea sediment). These materials have certified or recommended activities for a variety of radionuclides but not for 129I. This paper reports a comparison of accelerator mass spectrometry (AMS) and thermal ionization mass spectrometry (TIMS) data for 129I activity, as well as the 129/127I ratios for these standards to assist in identifying a suitable alternative for IAEA-375. Two independent chemical separation and mass spectrometric analysis techniques have been applied in an effort to corroborate the data. Both methods were validated via analyses of IAEA-375 for 129I and show good agreement with the recommended activity of 1.7 × 10−3 Bq kg−1 for 129I; (1.6 × 10−3 Bq kg−1 by AMS and 1.8 × 10−3 Bq kg−1 by TIMS) with both sets of results within the 95% confidence interval of the recommended value.

AB - Iodine environmental measurement programs are in need of new materials with certified 129I activity. Frequently 129I measurements are validated in the literature using the standard material IAEA-375, Chernobyl soil, which is the only soil/sediment material with a recommended 129I activity. IAEA-375 has not been available for purchase since 2010. This study is an extension of previous work at INL to include four additional standard materials that are commercially available (NIST materials: RM 8704, Buffalo River sediment, SRM 2710a, Montana I soil, and IAEA materials: SL-1, lake sediment, IAEA-385, Irish Sea sediment). These materials have certified or recommended activities for a variety of radionuclides but not for 129I. This paper reports a comparison of accelerator mass spectrometry (AMS) and thermal ionization mass spectrometry (TIMS) data for 129I activity, as well as the 129/127I ratios for these standards to assist in identifying a suitable alternative for IAEA-375. Two independent chemical separation and mass spectrometric analysis techniques have been applied in an effort to corroborate the data. Both methods were validated via analyses of IAEA-375 for 129I and show good agreement with the recommended activity of 1.7 × 10−3 Bq kg−1 for 129I; (1.6 × 10−3 Bq kg−1 by AMS and 1.8 × 10−3 Bq kg−1 by TIMS) with both sets of results within the 95% confidence interval of the recommended value.

KW - 129I

KW - AMS

KW - Accelerator mass spectrometry

KW - Iodine

KW - Reference materials

KW - Standards

KW - TIMS

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U2 - 10.1016/j.nimb.2018.07.018

DO - 10.1016/j.nimb.2018.07.018

M3 - Article

AN - SCOPUS:85054535797

SN - 0168-583X

VL - 438

SP - 84

EP - 88

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

ER -

Independent measurements of ¹²⁹I content in environmental reference materials using accelerator and thermal ionization mass spectrometry

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