Zhongchao Tan, Yuanhui Zhang
Bibliographic info:
Ashrae 2003, annual meeting, Kansas City, USA, June 2003, paper 4639, pp 12, 1 Tab., 19 Ref.

This paper gives an overview of sources of indoor particulate matter (PM) and its effects on occupants. Studies indicate that outdoor PM contributes to indoor PM, yet a large fractionof indoor PM is generated indoors. The ratio of indoor to outdoor PM concentrations (I/O ratio) varies substantially due to different indoor conditions and PM spatial distributions.Real-time investigation using multiple point sampling technique is needed for better understanding of PM spatial distribution. Particles smaller than 10 m in aerodynamic diameter, which are referred to as respirable particles, are primarily responsible for respiratory dysfunctions in human occupants and animals. In addition, PM is often a major carrier of other pollutants, including radon and odor.