The article presents findings on the content of radon isotopes in air buildings maintained Kurchatov t., dependence concentrations residential and administrative a season assessed as well type premises their purpose. Seasonal variations were studied by measuring equivalent equilibrium volumetric activity (EEVA) (VA) radon. For first time, activities industrial have been determined. Data showed ...

When compared to indoor radon concentrations, outdoor radon levels are generally low. Within the vicinity of a radon mitigation system, however, exhausted radon may cause unnaturally high levels of outdoor radon. A study was conducted over a period of three weeks on a home with a subslab depressurization mitigation system measuring outdoor radon concentrations correlated with wind speed. The da...

An important goal of those concerned with air pollution is to estimate the time-weighted average exposure to various indoor air pollutants. Various studies have measured the concentration of pollutant for indoor environments, but without regard to the presence of humans. Other studies have used diaries and other records to evaluate the activity patterns relative to various environments, indoor ...

The earliest evidence of increased lung cancer risk associated with radon came largely from studies of highly exposed underground miners. In the United States, concerns about residential exposures became prominent in the early 1980s with the identification of the Watras home, which had remarkably elevated radon concentrations. By then, the problem of indoor radon was already recognized in Europ...

BACKGROUND The main sources of radiation exposure of all living organisms including humans are natural. In fact, radon and its decay products are the cause of 50% of the total dose that is derived from natural sources. Because of the significant health hazards of radon gas, its levels are widely monitored throughout the world. Accordingly, considerable researches have also been carried out in I...

background: radon (222rn) measurement in the residential environments is very important because of its effecting on human health and causing cancer in the respiratory system. 222rn is individually responsible for half of the natural radiation received in humans and influences on human by breathing. hence, this study was undertaken to access the 222rn level in the dormitories of kerman universit...

This study presents the seasonal variation of indoor radon/thoron and their progeny concentrations measured in 50 dwellings Gurugram district Haryana state, India. Single-entry pinhole dosimeters were used for measurement radon thoron concentration, attached unattached progenies these gases, direct sensor with without wire-mesh employed. The absorbed inhalation dose to people area was calculate...

The recent publications of the combined analyses of residential radon studies in Europe and North America have shown that there is a significant risk of lung cancer at residential radon levels. In order to assess the population risk due to radon, the knowledge of the spatial distribution of indoor radon levels is essential. Here a preliminary radon map for Canada is presented, based on historic...