AI Article Synopsis
- Investigations from 1986 to 2009 showed that the Chernobyl disaster led to higher levels of (137)Cs, a radioactive isotope, in Adriatic pilchards compared to before the accident.
- The ecological half-life of (137)Cs in pilchards exhibited a bimodal behavior, with estimated half-lives of 1.5 years for 1986-90 and 5.8 years for 1991-2009.
- The estimated annual radiation doses from consuming pilchards containing (134)Cs and (137)Cs for adults in Croatia were low, with a total collective dose of 4.9 person-Sv from 1986 to 2009.
Article Abstract
Investigations in the post-Chernobyl period (1986-2009) of radiocaesium activity concentrations in Adriatic pilchards are presented. Compared with pre-Chernobyl period, the Chernobyl nuclear accident caused increase of (137)Cs activity concentrations in pilchards. By fitting the measured (137)Cs activity concentrations to the theoretical curve was estimated to be 1.5±0.4 y for 1986-90 and 5.8±0.4 y for 1991-2009 and the bimodal behaviour for the ecological half-life of (137)Cs in pilchards has been observed. Estimated annual effective doses received by (134)Cs and (137)Cs intake due to consumption for an adult member of Croatian population are small. Collective dose for the 1986-2009 period was 4.9+0.3 person-Sv. The observed (134)Cs/(137)Cs activity ratio in pilchards was similar to the ratio that has been found in other environmental samples. The concentration factor for pilchards was roughly estimated to be 93.7±39.2 l kg(-1), which is consistent with the values observed elsewhere.
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| http://dx.doi.org/10.1093/rpd/ncs012 | DOI Listing |
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