Garcia F, Barioni A, Arruda-Neto J D T, Deppman A, Milian F, Mesa J, Rodriguez O
Physics Institute, University of São Paulo, Rua do Matão, Travessa R, 187, 05508900 Cidade Universitaria, Butanta, São Paulo, Brazil.
Environ Int. 2006 Jul;32(5):697-703. doi: 10.1016/j.envint.2006.03.005. Epub 2006 Apr 19.
Natural levels of uranium in the diet of São Paulo City residents were studied, and radionuclide concentrations were measured by the fission track method on samples of typical adult food items. This information was used to evaluate the daily intake of uranium in individuals living in São Paulo City which is, according to our findings, around 0.97 microg U/day. Using the ICRP Uranium-model, we estimated the uranium accumulation and committed doses in some tissues and organs, as function of time. We compared the output of the ICRP uranium biokinetic model, tailored for the conditions prevailing in São Paulo, with experimental data from other localities. Such comparison was possible by means of a simple method we developed, which allows normalization among experimental results from different regions where distinct values of chronic daily intake are observed.
对圣保罗市居民饮食中的天然铀含量进行了研究，并采用裂变径迹法对典型成人食品样本中的放射性核素浓度进行了测量。该信息用于评估圣保罗市居民的每日铀摄入量，根据我们的研究结果，约为0.97微克铀/天。使用国际辐射防护委员会（ICRP）的铀模型，我们估算了某些组织和器官中铀的积累量和累积剂量随时间的变化情况。我们将针对圣保罗市实际情况定制的ICRP铀生物动力学模型的输出结果与其他地区的实验数据进行了比较。通过我们开发的一种简单方法可以进行这种比较，该方法能够对不同地区观察到的慢性每日摄入量不同的实验结果进行归一化处理。
