To develop effective monitoring and control programs for indoor radon it is important to understand the causes of the broad range of concentrations that have been observed. Measurements of indoor radon concentration and air-exchange rate in dwellings in several countries indicate that this variability arises largely from differences among structures in the rate of radon entry.
Volatile organic chemicals in indoor air of a home-for-the-elderly and a new local government office building were identified and quantified using Texax GCR samplers and capillary gas chromatography/mass spectrometry analysis. Over three hundred chemicals were tentatively identified in indoor air of thehome-for-the-elderly. Comparison of night-day levels were made. The new office building was also part of a longitudinal study which revealed a rapid decrease in levels with time for some chemicals (after completion) while others increased.
Examines the effects of smoking rate, ventilation, surface deposition, and air cleaning on the indoor concentrations of respirable particulate matter and carbon monoxide generated by cigarette smoke. A general mass balance model is presented which has been extended to include the concept of ventilation efficiency. Following a review of the source and removal terms associated with respirable particulates and carbon monoxide, we compare model predictions to various health guidelines.
Notes that the Department of the Environment is considering the implications of imposing limits for the maximum annual dose of radiation to which occupants of existing and new homes should be exposed, as recommended by the Royal Commission on Environmental Pollution in its report of 1984. Describes radon's properties and origins in buildings, where levels are at least ten times higher than outdoors. The occupants of some homes, chiefly on granitic soils, receive up to 100 times the national average dose from radon. Explains the units used when discussing radon.
Describes the different types of monitoring and sampling techniques that can determine the radiation burden of the general public from radon and its decay products. This is accomplished by measuring the range and distribution of radon and rad
Simulation methods and test results are presented here to confirm projections of actual total suspended particulate (TSP) concentration levels for representative office buildings, with particular emphasis on the 0.3 to 5 micron particulate si
The U.S. EPA initiated an indoor air monitoring program in 1982, concentrating on commercial or public-access buildings (homes for the elderly, schools, and office buildings). Several buildings from each category are sampled over 2-3 day peri
It is only recently that indoor air pollution has begun to attract the attention it deserves in Canadian Governmental and Building code circles. Two main events have been catalytic towards this increased emphasis. First, the ban on the use of ur
Describes methods of predicting concentration levels of indoor air pollution in a variety of residences by using residence air infiltration rates, residence volumes, and source terms, and by making assumptions about occupant lifestyle and poll
During the last fifteen years Urea-Formaldehyde (UF) bonded particle board, medium density fiberboard and plywood have replaced whole wood as a construction material for flooring, wall panelling cabinet work and furniture. At the same time,
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