title: Long-term ¹³⁷Cs activity monitoring of mushrooms in forest ecosystems of the Czech Republic.
abstract: This paper reports on results of activity mass concentration analyses performed in various forest mushrooms in the Czech Republic within 1986 and 2011. The estimated effective half-life of (137)Cs and its environmental half-life (i.e. the effective half-life minus the effect of physical decay) were found to be 5.6 ± 0.6 and 6.9 ± 0.7 y, respectively. Non-homogeneity in (137)Cs surface contamination over the country's territory and fungus species-based (137)Cs accumulation capacity then account for a span of up to 4 orders of magnitude in activity mass concentrations measured each year after the Chernobyl accident. The highest geometric activity mass concentration (Bq kg(-1) of dry weight) means of (137)Cs (obtained from samples between years 2004 and 2011) were measured in Suillaceae (1050 Bq kg(-1)) and Boletus badius (930 Bq kg(-1)), the lowest in Agaricus (1 Bq kg(-1)). The geometric mean of all mushrooms amounted to 230 Bq kg(-1), being 440 Bq kg(-1) in Boletales, 150 Bq kg(-1) in Russulales and 21 Bq kg(-1) in Agaricales. Geometric standard deviation levels were generally high. The highest Cs accumulation capacity was observed in Boletales (namely in Suillaceae), while the lowest in Agaricales, being over 3 orders of magnitude lower than in Suillaceae.
authors.affiliation: SÚRO (National Radiation Protection Institute), Bartoškova 28, 140 00 Praha, Czech Republic.
authors.forename: J
authors.initials: J
authors.lastname: Škrkal
authors.forename: P
authors.initials: P
authors.lastname: Rulík
authors.forename: K
authors.initials: K
authors.lastname: Fantínová
authors.forename: J
authors.initials: J
authors.lastname: Burianová
authors.forename: J
authors.initials: J
authors.lastname: Helebrant
mesh_terms: D000363:Agaricales / Q000737:chemistry*; D002588:Cesium Radioisotopes / Q000032:analysis*; D047852:Chernobyl Nuclear Accident; D018153:Czech Republic; D017753:Ecosystem; D004781:Environmental Exposure; D005506:Food Contamination; D005507:Food Contamination, Radioactive / Q000032:analysis*; D019216:Metals, Heavy / Q000737:chemistry; D018517:Plant Roots / Q000382:microbiology; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D011874:Radiometry; D012044:Regression Analysis; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D014197:Trees
chemical_list: D002588:Cesium Radioisotopes; D019216:Metals, Heavy; D012990:Soil Pollutants, Radioactive