Gaso M I, Segovia N, Herrera T, Perez-Silva E, Cervantes M L, Quintero E, Palacios J, Acosta E
ININ, México D.F., Mexico.
Sci Total Environ. 1998 Nov 10;223(2-3):119-29. doi: 10.1016/s0048-9697(98)00307-6.
Cs-137 and K-40 have been determined in soil samples and in wild edible mushrooms from a forest ecosystem located at the Nuclear Centre of Mexico (NCM) and in several surrounding localities. The transfer factors for Cs-137 were studied in 21 mushroom species from 1993 to 1997. The Cs-137 and K-40 determinations were performed using a gamma spectrometer system of low level counting with a high purity germanium (HPGe) detector. The local mushroom species that were found to show higher Cs-137 transfer factors were Clavariadelphus truncatus, Cortinarius caerulescens, Gomphus floccosus and Lyophyllum decastes. The Cs-137 levels obtained at the NCM in some mushroom samples were slightly lower than those from surrounding localities indicating that the nuclear facility has not emitted Cs-137 to the atmosphere.
在墨西哥核中心（NCM）及其周边几个地区的森林生态系统的土壤样本和野生可食用蘑菇中，已测定了铯 - 137和钾 - 40。1993年至1997年期间，对21种蘑菇物种的铯 - 137转移因子进行了研究。使用带有高纯锗（HPGe）探测器的低水平计数伽马能谱仪系统对铯 - 137和钾 - 40进行测定。发现铯 - 137转移因子较高的当地蘑菇物种有截顶棒瑚菌、天蓝丝膜菌、絮状陀螺菌和美味鳞伞。在NCM的一些蘑菇样本中测得的铯 - 137水平略低于周边地区的水平，这表明该核设施未向大气中排放铯 - 137。
