Long-term ¹³7Cs activity monitoring of mushrooms in forest ecosystems of the Czech Republic.
Radiat Prot Dosimetry
; 157(4): 579-84, 2013 Dec.
Article
en En
| MEDLINE
| ID: mdl-23838098
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.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Contaminantes Radiactivos del Suelo
/
Árboles
/
Contaminación Radiactiva de Alimentos
/
Radioisótopos de Cesio
/
Monitoreo de Radiación
/
Agaricales
Tipo de estudio:
Diagnostic_studies
País/Región como asunto:
Europa
Idioma:
En
Revista:
Radiat Prot Dosimetry
Año:
2013
Tipo del documento:
Article
País de afiliación:
República Checa