Nedveckaite T, Filistowicz W
Laboratory of Radiation Safety, Institute of Physics, Vilnius, Lithuania.
Health Phys. 1995 Aug;69(2):265-8. doi: 10.1097/00004032-199508000-00012.
The volatile radioiodine was detected in Lithuania in the very first days after the Chernobyl accident. The proportion of gaseous 131I species of airborne iodine identified during that period exceeded from 2 to 4 times the aerosol fraction. The radioiodine activity of milk consumed by inhabitants of Lithuania varied over a broad range. 131I activity in milk reached a peak on the fourth day after deposition and then decreased with an effective half-time ranging from 4.2 +/- 0.6 d to 5.2 +/- 0.9 d. Thyroid examinations by dosimetric teams were not available in Lithuania for reasons beyond the control of experimenters. Because of this, thyroid equivalent doses were estimated using the modified ICRP three-compartment cyclic model. These calculations applied Monte Carlo methods and consideration of regional iodine deficiency to generate frequency distributions of equivalent doses to the infant and adult thyroid gland in three areas of Lithuania with different contamination levels.
在切尔诺贝利事故后的最初几天，立陶宛就检测到了挥发性放射性碘。在那段时期，空气中碘的气态131I种类所占比例超出气溶胶部分2至4倍。立陶宛居民消费的牛奶中放射性碘活性变化范围很大。牛奶中的131I活性在沉降后的第四天达到峰值，然后以4.2±0.6天至5.2±0.9天的有效半衰期下降。由于实验人员无法控制的原因，立陶宛的剂量测定小组无法进行甲状腺检查。因此，使用改进的国际辐射防护委员会三室循环模型估算了甲状腺当量剂量。这些计算采用了蒙特卡罗方法，并考虑了地区性碘缺乏情况，以生成立陶宛三个污染水平不同地区婴儿和成人甲状腺当量剂量的频率分布。
