التفاصيل البيبلوغرافية
| العنوان: |
90Sr bioassay in small-volume urine by ICP-MS/MS with CO2 as the reaction gas. |
| المؤلفون: |
Yang, Guosheng, Tazoe, Hirofumi, Kim, Eunjoo, Zheng, Jian, Kowatari, Munehiko, Kurihara, Osamu |
| المصدر: |
JAAS (Journal of Analytical Atomic Spectrometry); Dec2023, Vol. 38 Issue 12, p2562-2570, 9p |
| مصطلحات موضوعية: |
URINE, BIOLOGICAL assay, NUCLEAR accidents, DETECTION limit, REFERENCE sources, QUALITY control |
| مصطلحات جغرافية: |
FRANCE |
| مستخلص: |
It is critical to perform dose assessment after internal contamination with beta-particle emitting 90Sr due to its relatively long physical and biological half-lives, along with the higher specific activities of 90Sr and its daughter 90Y. For rapid public screening after a large-scale radiological/nuclear accident, we developed a novel 90Sr bioassay for small-volume urine samples using triple-quadrupole inductively coupled plasma-mass spectrometry (ICP-MS/MS). After organic matter decomposition of 10 mL urine using HNO3, stacked DGA and Sr resin cartridges were used directly for chromatographic separation and purification of Sr. Yields of Sr were measured as 94 ± 5% (n = 12) for the whole procedure, using stable 88Sr originally in the urine sample as a yield tracer. CO2 proved to be a better reaction gas than O2, to overcome isobaric/polyatomic interferences, especially those caused by Zr and Ge. With a conventional introduction system + s lens + 75% CO2 flow rate in the 4# cell gas line, the method detection limit (MDL) was estimated to be 0.978 pg L−1 (5 Bq L−1) in 10 mL urine, meeting the public screening requirement for judging ingestion/inhalation exposure beyond 1 mSv Committed Effective Dose Equivalent, with a reasonable throughput (∼6 h for 12 samples). For method validation, the standard reference materials provided by PROCORAD (Association for the PROmotion of Quality COntrol in RADiotoxicological Analysis), France, were analyzed and the results were all in good agreement with the assigned values. [ABSTRACT FROM AUTHOR] |
|
Copyright of JAAS (Journal of Analytical Atomic Spectrometry) is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
