Relative contribution of outdoor and indoor particle sources to indoor concentrations

Article Abstract:

University researchers investigated the sources of indoor particles by studying indoor and outdoor particle distribution data from four residential homes in Boston.

United States, Science & research, Research and Testing Services, Scientific Research and Development Services, Research & Development-Universities, Brief Article, Distribution, Particles, Particulate matter, University research

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Personal exposure to acid aerosols and ammonia

Article Abstract:

The occurence of outdoor measurements in estimating personal exposure to strong sulfate and aerosol acidity was evaluated. Twenty-four children were subjected to indoor, outdoor and personal acid aerosol monitoring. Results from these measurements were compared to outdoor measurements collected from a stationary ambient monitoring site. It was found that exposures for children living in semirural communities can be estimated using personal ammonia models based on outdoor measurements, time-activity information and home airconditioning status.

Health aspects, Research, Analysis, Measurement, Ammonia, Rural children, Aerosols, Air quality, Environmental chemistry

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Spatial variation in particulate concentrations within metropolitan Philadelphia

Article Abstract:

Variations in particle mass concentrations (PM) in eight different sites in metropolitan Philadelphia, PA, were investigated. The results showed that PM concentrations across Philadelphia were relatively uniform, indicating that particulate samples obtained at a single site could be sufficient for characterizing particulate concentrations throughout the whole area. Coarse concentrations varied spatially and were related to population density.

Environmental aspects, Air pollution, Philadelphia, Pennsylvania

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