Quantification of ⁸⁵Rb, ¹³⁶Ce, ¹⁴²Nd and ¹⁵⁰Nd Enriched Isotope Standards

Technical Report · Thu Jun 29 00:00:00 EDT 2017

DOI:https://doi.org/10.2172/1408520· OSTI ID:1408520

Snow, Mathew S. ^[1]; Giglio, Theresa ^[1]; Olson, John ^[1]; Sommers, James D. ^[1]; Crow, Jana P. ^[1]; Snyder, Darin ^[1]; Carney, Kevin ^[1]; Hague, Bob ^[1]

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1. Idaho National Lab. (INL), Idaho Falls, ID (United States)

Enriched isotope standards are required for routine nuclear fuel burnup and other radiochemical analyses. In 2017 Idaho National Laboratory (INL) generated isotope standard solutions containing enriched ⁸⁵Rb, ¹³⁶Ce, ¹⁴²Nd, and ¹⁵⁰Nd. Oxide and chloride forms of each enriched isotope were obtained from the Oak Ridge Isotope Production program, dissolved, and quantified by isotope dilution-multi collector mass spectrometry. Quantification of the isotope solutions was performed independently by two separate laboratories at INL: the Analytical Laboratory (AL) at the Material and Fuels Complex (MFC) and the Ultra-trace Analytical Laboratory (UAL) in Idaho Falls. Concentration measurement results for all solutions and ¹⁴²Nd isotope ratio values reported by both laboratories are in quantitative agreement with each other, while isotope ratio values reported for ¹⁵⁰Nd are observed to have an apparent ~0.8% bias between the results of each laboratory. Data for ⁸⁵Rb/⁸⁷Rb isotope ratio values for UAL TIMS measurements and AL MC-ICP-MS measurements are in quantitative agreement with each other, while those of UAL MC-ICP-MS are observed to be much higher due to the existence of unidentified polyatomic interferences in the 84-88 m/z range for this instrument. Concentration and isotope ratio values for these isotope tracer solutions, along with detailed description of the analytical and data analysis methods utilized, are reported herein.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
• Contributing Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Isotope Production Program (IPP)
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 1408520
• Report Number(s): INL/EXT-17-42457
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
07 ISOTOPE AND RADIATION SOURCES
isotope dilution
Mass Spectrometry
standard