Accumulation of 137Cs in puddle sediments within urban ecosystem.
The role of puddle sediments as a final depot of (137)Cs horizontal migration within the urban landscape is studied using the example of Ekaterinburg city, Russia. Radioactive contamination in the city appeared due to fallout after atmospheric testing of nuclear weapons and nuclear accidents. Contamination density of (137)Cs in the region was assessed from archive data to be about 5.1 kBq/m(2), of which the maximum activity concentration (<30 Bq/kg) is associated with the upper 15 cm soil layer. Results of the survey reported here indicate a mean (137)Cs activity concentration in puddle sediments of 80 Bq/kg, with a maximum value of 540 Bq/kg. It is estimated that horizontal migration has led to about a fourfold concentration of (137)Cs in puddle sediments.
Seleznev
Andrian A
AA
Institute of Industrial Ecology, Ural Branch of Russian Academy of Sciences, 620219 Ekaterinburg, Russia. seleznev@ecko.uran.ru
Yarmoshenko
Ilia V
IV
Ekidin
Alexey A
AA
D002588:Cesium Radioisotopes / Q000032:analysis*; D002947:Cities; D017753:Ecosystem; D019015:Geologic Sediments / Q000032:analysis*; D012990:Soil Pollutants, Radioactive / Q000032:analysis; D014875:Water Pollutants, Radioactive / Q000032:analysis
D002588:Cesium Radioisotopes; D012990:Soil Pollutants, Radioactive; D014875:Water Pollutants, Radioactive