An overview of particulate matter in indoor environments: Sources and effects

Zhongchao Tan, Yuanhui Zhang

Research output: Contribution to journalConference articlepeer-review


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 fraction of 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 μm 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.

Original languageEnglish (US)
Pages (from-to)89-100
Number of pages12
JournalASHRAE Transactions
Volume109 PART 2
StatePublished - 2003
Event2003 Annual Meeting of the American Society of Heating, Refrigerating and Air-Conditioning Engineers - Kansas, United States
Duration: Jun 28 2003Jul 2 2003

ASJC Scopus subject areas

  • Building and Construction
  • Mechanical Engineering


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