| Autor: |
J. Šmarda, Matěj Neznal, Martin Neznal |
| Rok vydání: |
1996 |
| Předmět: |
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| Zdroj: |
Environment International, Vol 22, Iss, Pp 819-828 (1995) |
| ISSN: |
0160-4120 |
| DOI: |
10.1016/s0160-4120(96)00189-4 |
| Popis: |
The uniform method for the assessment of radon potential of soils (so-called Radon Risk Classification of Foundation Soils) used in the Czech Republic is based on determination of soil-gas radon concentration and on permeability classification. This paper discusses the results of studies to improve the method based on recent experience. The soil-gas radon concentrations may vary, often greatly, over small distances. An occurrence of heterogenities often indicates the presence of faults or tectonic zones. Any evaluation based on a single measurement is almost worthless. The sampling depth of 0.8 m represents a reasonable compromise between the required reduction of errors caused by the radon variability and the practicability of the method under field conditions. Observed temporal variations of soil-gas radon concentrations may often correspond not only to real variations of the measured physical quality, but also to fluctuations and errors connected with the sampling and measuring technique. A reproducibility of the radon risk classification is satisfactory. Neither a normal nor a log-normal model is generally applicable for a description of soil-gas radon concentration data. The field of soil-gas radon concentration measurement is characterized by a relatively high level of knowledge. More problems are connected with the determination of the second main parameter-soil permeability. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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