137Cs is one of the most important radionuclides released in the course of atmospheric nuclear weapon tests and during accidents in nuclear power plants such as that in Chernobyl, Ukraine, or Fukushima, Japan. The aim of this study was to compare 137Cs and 40K concentrations in particular species of mushrooms from selected locations in the Bohemian Forest (Czech: Šumava), Czech Republic, where a considerable contamination from the Chernobyl accident had been measured in 1986. Samples were collected between June and October 2014. Activities of 137Cs and 40K per dry mass were measured by means of a semiconductor gamma spectrometer. The 137Cs values measured range from below detection limit to 4300 ± 20 Bq kg-1, in the case of 40K from 910 ± 80 to 4300 ± 230 Bq kg-1. Differences were found between individual locations, due to uneven precipitation in the course of the movement of the radioactive cloud after the Chernobyl accident. There are, however, also differences between individual species of mushrooms from identical locations, which inter alia result from different characteristics of the soil and depths of mycelia. The values measured are compared with established limits and exposures from other radiation sources present in the environment. In general, it can be stated that the values measured are relatively low and the effects on the health of the population are negligible compared to other sources of ionizing radiation.

• Klíčová slova
• 137Cs, Chernobyl, Contamination, Gamma spectrometry, Mushrooms, Nuclear weapon tests,
• MeSH
• Agaricales chemie   MeSH
• monitorování radiace * MeSH
• radioaktivita MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Česká republika MeSH

Meat of wild boar with an intial (137)Cs activity concentration of 103 Bq kg(-1) of fresh mass was treated by brining. Dry-salting reduced the (137)Cs activity only by about 12-18%. Subsequent brining was done by using both pure sodium chloride and a mixture of sodium chloride and potassium nitrate. After double-brine exchange, the (137)Cs activity concentration was reduced by at least 72%. The double-brine exchanges were done for two time intervals (the first each 24 h and the second each 7 days). There were no differences in the (137)Cs activity reduction for these two time intervals. From the technological point of view, the repeated exchange of the brine solution represents a relative easy method of (137)Cs activity reduction in contaminated pork meat.

• MeSH
• analýza potravin MeSH
• chlorid sodný chemie   MeSH
• dusičnany chemie   MeSH
• manipulace s potravinami metody   MeSH
• maso * účinky záření   MeSH
• osmolární koncentrace MeSH
• prasata * MeSH
• radioaktivní kontaminace potravin analýza   MeSH
• radioizotopy cesia analýza   chemie   MeSH
• roztoky MeSH
• sloučeniny draslíku chemie   MeSH
• soli chemie   MeSH
• zvířata MeSH
• Check Tag
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• brine MeSH Prohlížeč
• chlorid sodný MeSH
• dusičnany MeSH
• potassium nitrate MeSH Prohlížeč
• radioizotopy cesia MeSH
• roztoky MeSH
• sloučeniny draslíku MeSH
• soli MeSH