Radon entry into buildings driven by atmospheric pressure fluctuations

Article Abstract:

The extent atmospheric pressure has on radon entry into houses appears to depend on indoor-outdoor pressure differences. When the indoor-outdoor pressure is steady, atmospheric pressure has a lower effect on radon entry than when indoor-outdoor pressure differences are small. Atmospheric pressure has virtually no effect on radon entry when indoor-outdoor pressure differences are greater than 1.5 times the rate of radon entry through molecular diffusion.

Air Pollution Control R&D, Air pollution research, Pollution control research, Atmospheric pressure

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Experimental assessment of the short- and long-term effects of 222Rn from domestic shower water on the dose burden incurred in normally occupied homes

Article Abstract:

Showering with water containing 222Rn appears to increase the amount of a home's exposure to radon and its decay products. This observation has important implications due to radon's effect on human health. Over the long term, radon exposure is more than double the average daily radon dose in homes where the shower water used contains 222Rn. Over the short term, exposure to radon-laden shower water increases the average daily dose by 17%.

Water Pollution Control R&D, Water pollution research, Water analysis, Trace pollutants, Trace elements in water

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Soil-gas entry into an experimental basement: model measurement comparisons and seasonal effects

Article Abstract:

The effect of seasonal changes in soil conditions on pressure-driven soil-gas entry rates and the consistent underpredictions of these rates were investigated. The westernmost of two basement structures located in the Santa Cruz Mountains, California were subjected to controlled artificial depressurization. Seasonal changes in soil moisture and permeability did not cause measurable changes in soil-gas and radon transport.

Measurement, Environmental aspects, Basements, Soil aeration

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