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Estimating the Internal Dose for 131I Production Workers From Air Sampling Method.

Tran Xuan Hoi1,2, Huynh Truc Phuong2, Nguyen Van Hung3

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Portable air samplers offer an efficient method for assessing internal radiation dose from inhaled Iodine-131 (131I) in production facilities. This approach is effective when sampling is near the worker

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Area of Science:

  • Occupational Health and Safety
  • Radiological Protection
  • Environmental Monitoring

Background:

  • Internal dose assessment for inhaled Iodine-131 (131I) typically relies on thyroid monitoring and urine analysis.
  • Air sampling is a less common but potential method for estimating internal dose from 131I exposure.

Purpose of the Study:

  • To evaluate the effectiveness of portable air samplers for estimating internal dose in workers at a 131I production facility.
  • To compare dose estimates obtained from air sampling with those from urine analysis.

Main Methods:

  • Utilized portable air samplers to measure airborne 131I concentrations.
  • Conducted simultaneous internal dose estimation via urine analysis for comparative purposes.
  • Collected data on worker time-micro-environment patterns.

Main Results:

  • Air monitoring demonstrated efficiency comparable to urine monitoring under specific conditions.
  • Effective air monitoring requires small indoor areas and sampling sites close to the worker's breathing zone.
  • Careful collection of worker time-micro-environment patterns is crucial for accurate air sampling dose estimates.

Conclusions:

  • Portable air sampling is a viable and efficient method for internal dose assessment of 131I in occupational settings.
  • Optimized air sampling protocols, including site placement and environmental data, enhance its utility.
  • This method provides a valuable alternative or supplement to traditional monitoring techniques.