137Cs in fish of some lakes and rivers of the Bryansk region and north-west Russia in 1990–1992

Lake fish as the main contributor of internal dose to lakeshore residents in the Chernobyl contaminated area

“…The 137 Cs specific activity in the pike sample (predatory fish) was twice as high as the benthivorous crucian carp, in agreement with previous observations (Fleishman et al, 1994;ECP-3, 1996). Such high 137 Cs content in fish reflects the unique radioecological properties of Lake Kozhanovskoye (see above) and confirms the findings of earlier publications (Fleishman et al, 1994;ECP-3, 1996;Konoplev et al, 1998). The 137 Cs content in lake fish and the mixture of forest mushrooms were 20-40 times the temporary permissible levels for these products adopted in Russia, in connection with the Chernobyl accident (TPL, 1993).…”

“…The average levels exceed the 137 Cs content in fish tissues collected from rivers or flow-through lakes in the same region by two orders of magnitude (Fleishman et al, 1994;ECP-3, 1996;IAEA, 2003;Travnikova et al, 2001). The 137 Cs specific activity in the pike sample (predatory fish) was twice as high as the benthivorous crucian carp, in agreement with previous observations (Fleishman et al, 1994;ECP-3, 1996).…”

“…The average levels exceed the 137 Cs content in fish tissues collected from rivers or flow-through lakes in the same region by two orders of magnitude (Fleishman et al, 1994;ECP-3, 1996;IAEA, 2003;Travnikova et al, 2001). The 137 Cs specific activity in the pike sample (predatory fish) was twice as high as the benthivorous crucian carp, in agreement with previous observations (Fleishman et al, 1994;ECP-3, 1996). Such high 137 Cs content in fish reflects the unique radioecological properties of Lake Kozhanovskoye (see above) and confirms the findings of earlier publications (Fleishman et al, 1994;ECP-3, 1996;Konoplev et al, 1998).…”

“…In the western part of the Bryansk region, the region subjected to the greatest impact from the Chernobyl accident in Russia, radioecologists found two lakes with high and only slowly decreasing 137 Cs contamination in water, sediments and biota: Kozhanovskoye and Svyatoye lakes (Fleishman et al, 1994;ECP-3, 1996;Konoplev et al, 1998). Both lakes have almost no drainage outflow and are located in an area where peat soils dominate, which helps to explain the contamination phenomenon.…”

Bioaccumulation of cesium‐137 in yellow bullhead catfish (Ameiurus natalis) inhabiting an abandoned nuclear reactor reservoir

“…Freshwater and marine fish, both cultured and native stocks, are a globally important source of dietary protein. The generally high trophic position of fish, their potential to serve as foodborne vectors of contaminants to man, and the recent dispersal of radioactive contaminants following the Chernobyl accident have renewed interest in the bioaccumulation and bioconcentration of radiocesium ( 137 Cs) in fish [1–5]. Understanding the factors that influence 137 Cs uptake, depuration, and bioconcentration in fish may be useful to biomonitoring, environmental remediation, commercial harvest, aquaculture, and the recreational use of this resource.…”