Guidance for inhalation exposures to particulate matter : V2 — April 2022
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Guidance for inhalation exposures to particulate matter : V2 — April 2022

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  • English
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    • Corporate Authors:
      United States. Agency for Toxic Substances and Disease Registry.
    • Description:
      Particulate matter (PM) is the generic term for a broad class of chemically and physically diverse solid particles and liquid droplets found in the ambient air. Particles originate from a variety of anthropogenic sources, both stationary (e.g., coal-fired power plants) and mobile (e.g., cars and trucks), as well as from natural (e.g., dust storms) sources. In addition to being directly emitted into the air, particles can be formed in the atmosphere through complex reactions involving chemicals such as sulfur dioxide (SO2) and nitrogen dioxide (NO2). PM is a mixture of various components (e.g., metals, elemental carbon (EC), organic compounds (OC), etc.), and as such, its chemical and physical properties can vary greatly with time, region, meteorology, and source (U.S. EPA 2009). Note that these guidelines are for non-speciated PM, or PM reported as a total mass without distinguishing the morphology and chemical composition of the PM (e.g., diesel engine PM, specific heavy metals, polychlorinated biphenyls, acidic content of aerosols, etc.).

      Citation:: [ATSDR] Agency for Toxic Substances and Disease Registry. 2020. Guidance for Inhalation Exposures to Particulate Matter. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service, September 30.

      ATSDR-Particulate-Matter-Guidance-508.pdf

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