title: Post-Chernobyl investigations of radiocaesium activity concentrations in Adriatic Sea pilchards.
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.
authors.affiliation: Radiation Protection Unit,  Institute for Medical Research and Occupational Health, Ksaverska cesta 2, PO Box 291, HR-10001 Zagreb,  Croatia.
authors.forename: Zdenko
authors.initials: Z
authors.lastname: Franić
authors.forename: Branko
authors.initials: B
authors.lastname: Petrinec
authors.forename: Gina
authors.initials: G
authors.lastname: Branica
authors.forename: Gordana
authors.initials: G
authors.lastname: Marović
authors.forename: Dragan
authors.initials: D
authors.lastname: Kubelka
authors.forename: Zrinka
authors.initials: Z
authors.lastname: Franić
mesh_terms: D000328:Adult; D000818:Animals; D002588:Cesium Radioisotopes / Q000032:analysis*; D047852:Chernobyl Nuclear Accident; D017523:Croatia; D005399:Fishes / Q000378:metabolism*; D005507:Food Contamination, Radioactive / Q000032:analysis*; D006801:Humans; D011834:Radiation Monitoring; D011847:Radioactive Fallout / Q000032:analysis*
chemical_list: D002588:Cesium Radioisotopes; D011847:Radioactive Fallout