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Implications for occupational exposure to particulate matter.

Mark J Utell1, William S Beckett

  • 1Medicine and Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA. mark_utell@urmc.rochester.edu

Clinics in Occupational and Environmental Medicine
|November 18, 2006
PubMed
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Lower ambient particle exposure poses risks to cardiovascular and respiratory health, contrary to occupational exposure data. Further research into fine and ultrafine particles is needed to understand these effects.

Area of Science:

  • Environmental Health
  • Cardiovascular Research
  • Respiratory Medicine

Background:

  • Ambient particle exposure at lower levels unexpectedly impacts cardiovascular and respiratory health.
  • Occupational particle exposure standards suggest higher concentrations are needed to cause disease.

Purpose of the Study:

  • To investigate the discrepancy between occupational and ambient particle exposure health effects.
  • To re-examine workplace exposure-response relationships for particle exposure.

Main Methods:

  • Review of existing literature on particle exposure and health outcomes.
  • Analysis of workplace exposure-response data.
  • Consideration of particle size (fine and ultrafine) in exposure assessment.

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Main Results:

  • Observed ambient particle exposure levels linked to adverse health effects are lower than those typically causing disease in occupational settings.
  • Current understanding of particle exposure-response relationships may not fully account for ambient conditions.

Conclusions:

  • There is a need to re-evaluate workplace exposure standards in light of ambient particle effects.
  • Future research should focus on fine and ultrafine particles, not just total mass concentration, to better understand health risks.