Monitoring results and analysis of 131I in the air of workplace treated with iodine
10.3760/cma.j.issn.0254-5098.2021.12.005
- VernacularTitle:碘治疗工作场所空气中 131I的监测结果与分析
- Author:
Weihang SUN
1
;
Lin ZHANG
;
Fei NIU
;
Jiaang XU
;
Nan MIN
;
Shuhui YANG
;
Fang LIU
;
Tiantian LI
;
Jianguo ZHU
Author Information
1. 山东第一医科大学（山东省医学科学院），济南 250117
- Keywords:
Thyroid cancer;
131I treatment;
Air sampling;
Iodine box;
Internal radiation
- From:
Chinese Journal of Radiological Medicine and Protection
2021;41(12):906-911
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To understand the activity concentration of 131I aerosol in the air of the iodine treatment workplace and estimate the internal dose of 131I inhaled by medical staff in nuclear medicine. Methods:Using CF-1001BRL portable large capacity air sampler, the 131I aerosol in the iodine treatment workplace of nuclear medicine department of 6 hospitals in Shandong province was collected by iodine box, and the HPGe-γ energy spectrometer was used to measure the samples. The 131I activity concentration in iodine treatment workplace at 6 hospitals was obtained, and the internal dose to medical staff was estimated. Results:The 131I activity concentration in the air in iodine treatment workplaces at 6 hospitals ranged from 3.64 to 2.94×10 3 Bq/m 3. The 131I activity concentration in the controlled area (ward, patient passageway, subpacking room, operation administration room) was significantly higher than that in the supervised area. The highest 131I activity concentration, 2.62×10 2 Bq/m 3, in the supervised area was found in the medical care passageway. The estimated effective dose to nuclear medicine workers was 0.07-5.68 mSv, not exceeding the national limit. Conclusions:The phenomenon of 131I aerosol contamination still exists in the iodine treatment workplaces of nuclear medicine departments in hospitals, so it is necessary to carry out internal radiation monitoring for nuclear medicine departments all around the country, and explore more reasonable protection standards and methods.
