| 王硕,拓飞,张建峰,等.核医学科工作场所中不同形态131I的活度浓度测量与分析[J].中华放射医学与防护杂志,2025,45(5):465-471.Wang Shuo,Tuo Fei,Zhang Jianfeng,et al.Measurement and analysis of activity concentrations of varying forms of 131I in nuclear medicine workplaces[J].Chin J Radiol Med Prot,2025,45(5):465-471 |
| 核医学科工作场所中不同形态131I的活度浓度测量与分析 |
| Measurement and analysis of activity concentrations of varying forms of 131I in nuclear medicine workplaces |
| 投稿时间：2024-12-16 |
| DOI：10.3760/cma.j.cn112271-20241216-00480 |
| 中文关键词: 核医学 131I 空气采样 非均匀分布 内照射 |
| 英文关键词:Nuclear medicine 131I Air sampling Inhomogeneous distribution Internal radiation |
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| 中文摘要: |
| 目的 了解核医学科工作场所中不同化学形态的131I活度浓度,评估职业人员的内照射剂量。方法 使用大流量空气采样器进行131I空气采样,利用串联的玻璃纤维滤膜、活性炭滤膜和碘盒分别采集不同化学形态的131I,包括气溶胶碘、气态无机碘和气态有机碘。建立碘盒中非均匀分布131I的活度分析方法,利用高纯锗(HPGe)γ谱仪对15家医院的核医学科工作场所采集的样品进行活度测量。结果 15家医院空气样品中气溶胶131I活度浓度为0.19~206.67 Bq/m3(算术平均值22.04 Bq/m3),无机碘的活度浓度范围为0.27~138.45 Bq/m3(算术平均值为12.79 Bq/m3),有机碘的活度浓度范围为2.35~3 821.11 Bq/m3(算术平均值为365.08 Bq/m3)。上述3种形态131I所致职业人员最大年待积有效剂量分别为0.19、0.19和3.81 mSv,年总待积有效剂量为4.13 mSv。结论 气态有机碘是核医学科空气中131I的主要存在形态,应重点考虑对气态有机碘的监测与防护。 |
| 英文摘要: |
| 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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