| Wang Shuo,Tuo Fei,Zhang Jianfeng,et al.Measurement and analysis of activity concentrations of varying forms of 131I in nuclear medicine workplaces[J].Chinese Journal of Radiological Medicine and Protection,2025,45(5):465-471 |
| Measurement and analysis of activity concentrations of varying forms of 131I in nuclear medicine workplaces |
| Received:December 16, 2024 |
| DOI：10.3760/cma.j.cn112271-20241216-00480 |
| KeyWords:Nuclear medicine 131I Air sampling Inhomogeneous distribution Internal radiation |
| FundProject: |
| Author Name | Affiliation | E-mail | | Wang Shuo | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Centre for Disease Control and Prevention, Beijing 100088, China | | | Tuo Fei | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Centre for Disease Control and Prevention, Beijing 100088, China | flytuo@163.com | | Zhang Jianfeng | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Centre for Disease Control and Prevention, Beijing 100088, China | | | Li Xiaoliang | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Centre for Disease Control and Prevention, Beijing 100088, China | | | Yang Baolu | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Centre for Disease Control and Prevention, Beijing 100088, China | | | Zhou Qiang | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Centre for Disease Control and Prevention, Beijing 100088, China | |
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| Abstract:: |
| Objective To understand the activity concentrations of varying chemical forms of 131I in nuclear medicine workplaces and assess the internal irradiation doses of 131I to workers. Methods A high-volume air sampler was used for air sampling of 131I. Glass fiber filters, activated carbon filters, and iodine cartridges, which were connected in series, were employed to collect aerosol iodine, gaseous inorganic iodine, and gaseous organic iodine, respectively. A method for analyzing the activity of 131I unevenly distributed in the iodine cartridge was developed, and an HPGe γ spectrometer was used to determine the activity of 131I in samples collected from the nuclear medicine workplaces of 15 hospitals. Results The concentrations of aerosol iodine, inorganic iodine, and organic iodine in 15 hospitals were determined at 0.19-206.67, 0.27-138.45, and 2.35-3821.11 Bq/m3, respectively, with arithmetic means of 22.04, 12.79 and 365.08 Bq/m3, respectively. The maximum annual committed effective doses of varied forms of 131I inhaled by workers were determined at 0.19, 0.19, and 3.81 mSv, respectively, with a maximum total committed effective dose of 4.13 mSv. Conclusions Gaseous organic iodine is identified as the primary form of 131I in the air within nuclear medicine workplaces. Therefore, it is necessary to highlight the monitoring and protection of gaseous organic iodine. |
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