Institute of Radioprotection and Nuclear Safety, Environment and Emergency Operations Division 31, rue de l'Écluse BP35, 78 116 Le Vésinet, France.
Environ Sci Technol. 2011 Dec 1;45(23):9998-10003. doi: 10.1021/es202242g. Epub 2011 Nov 2.
Iodine-131 and various other radionuclides were released into the atmosphere from the damaged Japanese reactors of Fukushima Dai-ichi from 12 to 22 March 2011. The contaminated air mass was detected in France after 24 March; samples of grass, vegetables, and milk have been analyzed for (131)I by the IRSN, considering the fact that few values of iodine-131 transfer parameters have been directly measured in situ, due to the radioactive decay of this isotope. Data are compared with calculated values according to the air iodine concentration. The apparent dry deposition velocity of iodine on grass is therefore estimated to range between 1 × 10(-3) and 5 × 10(-3) m s(-1) from site to site. In addition, the grass to milk transfer factors are 2.8 × 10(-2) and 3.6 × 10(-3) d L(-1) for goat's and cow's milk respectively. These parameters fit well with the current values usually considered for radioecological assessment.
2011 年 3 月 12 日至 22 日，受损的日本福岛第一核电站向大气中释放了碘-131 和其他各种放射性核素。3 月 24 日后，法国检测到了受污染的空气团；法国辐射防护与核安全研究院（IRSN）分析了草、蔬菜和牛奶中的（131）碘，由于这种同位素的放射性衰变，很少有碘-131 迁移参数的直接现场测量值。根据空气中的碘浓度，将数据与计算值进行了比较。因此，草上碘的干沉积速度估计值在 1×10(-3) 到 5×10(-3) m s(-1)之间。此外，羊奶和牛奶的草到奶转移系数分别为 2.8×10(-2) 和 3.6×10(-3) d L(-1)。这些参数与当前通常用于放射性生态评估的值非常吻合。
