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During recent years, sampling and analysis of atmospheres for indoor air quality in non-industrial environments have increased substantially. Enhanced understanding of indoor air pollution has resulted. Increased recognition of the complexity of indoor environments has led to even more sampling and analysis. Many methods used for indoor air are similar to those employed in workplace and ambient air. However, sampling conditions are often difficult; a very large number of pollutants are usually present, although at low concentrations; some pollutants of concern are at extremely low concentrations; and complex mixtures can create interferences.
Instrumentation requirements differ from those of ambient or industrial applications. Passive monitors and other unobtrusive monitoring equipment have received much attention. Sampling and analysis for biological aerosols will probably increase during the next few years. Other environmental factors are often critical and must also be characterized or measured. Social science and health investigatory methods are often employed in conjunction with air monitoring. Further research and development are needed for standardization in several areas including the sampling and analysis of organic compounds at very low concentrations, the general acceptance of standardized monitoring protocols, and guidelines for the consistent reporting and interpretation of data.
air quality, calibration, sampling, atmospheric measurements, indoor air quality, indoor air pollution, analysis, air quality monitoring, sampling instruments, air pollutants, indoor air pollutants, monitoring
Research specialist, Center for Environmental Design Research, University of California, Berkeley, CA