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Results for “AIR POLLUTION, RADIOACTIVE”

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At least 739 records · Page 41Linked to original sources
PubMed1989

Assessment of radiological emissions from Spanish coal power plants: radioactive releases and associated risks.

The radioactivity of coals and ashes from Spanish coal power plants (CPP) was evaluated. This radioactivity is due mainly to 40K and the U and Th series. The samples were measured in secular equilibrium using a NaI(T1) detector. The annual average airborne releases were also evaluated. An atmospheric dispersion model was developed to predict the annual average concentration of radionuclides in air. The risks from inhalation were calculated and compared with those from nuclear power plants (NPP) and natural radioactivity.

Air Pollutants↗
PubMed2003

Chernobyl 137Cs deposition in Austria: analysis of the spatial correlation of the deposition levels.

The semivariogram can provide a description of the spatial correlation of a variable that represents a continuous function of space co-ordinates. Therefore, it is not only useful to improve sampling strategies and validate the collected data, but it can also define the main parameters that are involved in most mapping algorithms. The spatial correlation may, however, change depending on the values of the variable, which is not without consequences on the quality of the maps of radioactive deposition. This work investigates the spatial correlation for different levels of 137Cs deposited in Austria. It is shown that low levels (< 5 kBq/m2) and high levels (> 40 kBq/m2) of radioactivity present less correlation in space than the mid-levels (5-40 kBq/m2). As a result, maps establishing the probabilities to be under or above a specific deposition threshold will have an uncertainty associated to the estimated values that is directly correlated to the different levels of radioactivity.

Air Movements↗