Radiocesium accumulation in edible wild mushrooms from coniferous forests around the Nuclear Centre of Mexico.
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.
Gaso
M I
MI
ININ, México D.F., Mexico.
Segovia
N
N
Herrera
T
T
Perez-Silva
E
E
Cervantes
M L
ML
Quintero
E
E
Palacios
J
J
Acosta
E
E
D000363:Agaricales / Q000737:chemistry*; D002588:Cesium Radioisotopes / Q000032:analysis*; D016468:Forestry; D008137:Longitudinal Studies; D008800:Mexico; D010945:Plants, Edible / Q000737:chemistry; D011197:Potassium Radioisotopes / Q000032:analysis; D011210:Power Plants; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D013045:Species Specificity
D002588:Cesium Radioisotopes; D011197:Potassium Radioisotopes; D012990:Soil Pollutants, Radioactive