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タグ「Concentration factor」

Long-term investigations of radiocaesium activity concentrations in carp in North Croatia after the Chernobyl accident

Title: Long-term investigations of radiocaesium activity concentrations in carp in North Croatia after the Chernobyl accident

Author: Zdenko Franić, Gordana Marović

Reference: Journal of Environmental Radioactivity, Volume 94, Issue 2, May 2007, Pages 75-85

DOI: http://dx.doi.org/10.1016/j.jenvrad.2007.01.001

Keywords: Carp; Concentration factor; 137Cs; 134Cs; Chernobyl accident; Dose; Fish consumption

Abstract: Long-term investigations of radiocaesium activity concentrations in carp in the Republic of Croatia are presented. The radiocaesium levels in carp decreased exponentially and the effective ecological half-life of 137Cs was estimated to be about 1 year during 1987–2002 and 5 years during 1993–2005.

The observed 134Cs:137Cs activity ratio in carp was found to be similar to the ratio observed in other environmental samples.

The concentration factor for carp (wet weight) was estimated to be 128 ± 74 L kg−1, which is in reasonable agreement with model prediction based on K+ concentrations in water.

Estimated annual effective dose received by adult members of the Croatian population due to consumption of carp contaminated with 134Cs and 137Cs are small: per capita dose from this source during 1987–2005 was estimated to be 0.5 ± 0.2 μSv.

Due to minor freshwater fish consumption in Croatia and low radiocaesium activity concentrations in carp, it can be concluded that carp consumption was not a critical pathway for the transfer of radiocaesium from fallout to humans after the Chernobyl accident.

URL: http://www.sciencedirect.com/science/article/pii/S0265931X07000252

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