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首页> 外文期刊>Radiation Protection Dosimetry >UNCERTAINTIES IN THE INTERNAL DOSIMETRY OF PLUTONIUM EVALUATED USING OLD AND NEW RESPIRATORY TRACT MODELS
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UNCERTAINTIES IN THE INTERNAL DOSIMETRY OF PLUTONIUM EVALUATED USING OLD AND NEW RESPIRATORY TRACT MODELS

机译：使用旧的和新的呼吸道模型评估P内部剂量的不确定性

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摘要

Assessment of internal deposition and hence intakes of plutonium due to chronic inhalation of its aerosols, are generally based on interpretation of bioassay urinary measurements with the aid of human respiratory tract models. However, the uncertainties in the estimates of intakes arise due to contributions from previous intakes, non-uniform exposure pattern in the current year and probable presence of transients close to the monitoring time. A comparative study of the evaluation of uncertainties in the estimates of intakes of ~239Pu aerosols of sizes 1μm and 5μm AMAD using respiratory tract models of ICRP 30 and 66, is presented here. Similar predictions by the two models of the uncertainties associated with previous intakes as well as non-uniform exposures in the current year are significant results. However, effects of the transients are predicted to be different by the two models for ~239Pu aerosols of 1μ m but similar for 5μm AMAD. These results could be utilised to reduce the overall uncertainty in the estimate of an intake. Finally, CEDs per mBq of activity measured in 24 h urine samples have been computed for all the cases and for both the lung models to facilitate assignments of doses to radiation workers.
机译：评估其内部沉积以及由于长期吸入其气溶胶而导致的intake的摄入量，通常是基于借助人类呼吸道模型对生物测定尿液测量值的解释。但是，摄入量估计数的不确定性是由于先前摄入量的贡献，当年的不均匀接触方式以及在监测时间附近可能存在瞬变引起的。本文介绍了使用ICRP 30和66呼吸道模型估算1μm和5μmAMAD大小〜239Pu气溶胶摄入量的不确定性评估的比较研究。这两个模型对与先前摄入量相关的不确定性以及当年的不均匀接触的相似预测是重要的结果。然而，两种模型对1μm的〜239Pu气溶胶的瞬变影响预计是不同的，而对于5μm的AMAD来说，瞬变的影响是相似的。这些结果可用于减少摄入量估算中的总体不确定性。最后，针对所有病例以及两种肺模型都计算了在24小时尿液样本中每mBq活性测得的CEDs，以利于向放射工作人员分配剂量。

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  • 来源
    《Radiation Protection Dosimetry》 |2000年第3期|193-197|共5页
  • 作者

    S.Bhati; R.C.Sharma;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 TL72;
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