University of Bremen, Institute of Environmental Physics, Otto-Hahn-Allee 1, D-28359 Bremen, Germany.
J Environ Radioact. 2011 Sep;102(9):877-80. doi: 10.1016/j.jenvrad.2011.06.003.
Traces of short- and long-lived fallout isotopes ((131)I, (134)Cs and (137)Cs) were found in environmental samples collected in Northwest Germany (rain water, river sediment, soil, grass and cow milk) from March to May 2011, following the radioactivity releases after the nuclear accident in Fukushima, Japan. The measured concentrations are consistent with reported concentrations in air, amount of rainfall and expected values applying simple radioecological models. The [(134)Cs]/[(137)Cs] ratio reported for air (about 1) allows for discrimination between "recent" and "old"(137)Cs. Expected (136)Cs values fell below the detection limits of the instrumentation, despite large sample masses and long counting times.
在日本福岛核事故发生后，2011 年 3 月至 5 月，我们在德国西北部（雨水、河流沉积物、土壤、草和牛奶）的环境样本中发现了短寿命和长寿命的放射性核素（131I、134Cs 和 137Cs）的痕迹。测量的浓度与报告的空气中的浓度、降雨量和应用简单放射性生态学模型的预期值一致。报告的空气中的（134Cs）/（137Cs）比值（约为 1）可用于区分“近期”和“旧”（137Cs）。尽管样品量很大且计数时间很长，但预计的（136Cs）值仍低于仪器的检测限。
