Quadrupole and multi-collector ICP-MS analysis of 226Ra in brain from a radium dial painter
Journal Article
·
· Journal of Analytical Atomic Spectrometry
- University of Missouri, Columbia, MO (United States); OSTI
- Washington State University, Pullman, WA (United States)
- University of Missouri, Columbia, MO (United States)
We report two ICP-MS methods were developed to measure the radiotoxic isotope 226Ra in brain tissues from a radium dial painter worker. The first method was a direct analysis of acid digested samples using quadrupole ICP-MS. The instrumental LOD of 226Ra was 0.1 ng kg-1. Polyatomic interferences at m/z 226 were investigated and Pb was identified from a polyatomic interferent in an in-house sample prepared from bovine brain, with a 226/208 formation ratio of 4 × 10-8. The quadrupole ICP-MS method was also used to measure levels of beryllium, strontium, and uranium. A second method was developed that included cation-exchange chromatography to separate 226Ra followed by analysis with sector field MC-ICP-MS. The instrumental LOD for the cation exchange method with MC-ICP-MS detection was 0.5 pg kg-1 (19 mBq kg-1). The measured concentrations of 226Ra in different brain regions ranged from 0.09–0.72 ng kg-1 (3.3–27 Bq kg-1) and radium was non-uniformly distributed in the brain.
- Research Organization:
- Washington State University, Pullman, WA (United States)
- Sponsoring Organization:
- Nuclear Regulatory Commission (USNRC); USDOE; USDOE Office of Environment, Health, Safety and Security (AU)
- Grant/Contract Number:
- HS0000073
- OSTI ID:
- 1978799
- Alternate ID(s):
- OSTI ID: 1870054
- Journal Information:
- Journal of Analytical Atomic Spectrometry, Journal Name: Journal of Analytical Atomic Spectrometry Journal Issue: 6 Vol. 37; ISSN 0267-9477
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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