Measurement of U and Pu isotope ratios in hair and nail samples using extraction chromatography and multi-collector inductively coupled plasma mass spectrometry
| Autor: | John D. Brockman, J. D. Robertson, J.N.W. Brown |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
China
Nuclear forensics chemistry.chemical_element Mass Spectrometry Analytical Chemistry Limit of Detection Humans Inductively coupled plasma mass spectrometry Chromatography Missouri integumentary system Isotope Extraction (chemistry) Reproducibility of Results Environmental Exposure Human decontamination Environmental exposure Uranium Plutonium Nails chemistry Biological Assay Hair |
| Zdroj: | Talanta. 129:481-485 |
| ISSN: | 0039-9140 |
| DOI: | 10.1016/j.talanta.2014.06.015 |
| Popis: | A bioassay capable of monitoring occupational or environmental exposure to special nuclear materials would be a useful tool for nuclear nonproliferation programs. Hair and nail are potential biomonitors of exposure to U and Pu. A method is described to measure isotope ratios of ultra-trace concentrations of U and Pu in hair and nail samples. The method uses multiple extraction chromatography resins to separate U and Pu fractions from the sample matrix. The U recovery was quantitative while the Pu recovery ranged from 81% to 109%, with a U decontamination factor of 5×10(4). Following the separation (234)U/(238)U, (235)U/(238)U and (240)Pu/(239)Pu were measured in human hair and hair and nail samples using multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS). The human hair and nail samples had elevated ratios of (234)U/(238)U which could reflect exposure to naturally fractionated U. |
| Databáze: | OpenAIRE |
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