Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Particle concentration in exhaled breath.

C I Fairchild1, J F Stampfer

  • 1Industrial Hygiene Group, Los Alamos National Laboratory, NM 87545.

American Industrial Hygiene Association Journal
|November 1, 1987
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Evaluation of continuous air monitor placement in a plutonium facility.

Health physics·1997
Same author

Examination of several instruments for the electrical detection of holes in latex gloves during use.

Journal of clinical engineering·1996
Same author

Single point aerosol sampling: evaluation of mixing and probe performance in a nuclear stack.

Health physics·1996
Same author

Electrical conductivity as a test for the integrity of latex gloves.

Journal of clinical engineering·1994
Same author

Using immersion test data to screen chemical protective clothing.

American Industrial Hygiene Association journal·1988
Same author

Permeation of eleven protective garment materials by four organic solvents.

American Industrial Hygiene Association journal·1984
Same journal

Barrier durability of latex and vinyl medical gloves in clinical settings.

American Industrial Hygiene Association journal·2001
Same journal

Microwave emissions from police radar.

American Industrial Hygiene Association journal·2000
Same journal

Assessment of magnetic field exposures for a mortality study at a uranium enrichment plant.

American Industrial Hygiene Association journal·2000
Same journal

An assessment of occupational noise exposures in four construction trades.

American Industrial Hygiene Association journal·2000
Same journal

Prediction of rectal temperature by the Questemp II personal heat strain monitor under low and moderate heat stress.

American Industrial Hygiene Association journal·2000
Same journal

Indoor airborne fiber levels of MMVF in residential and commercial buildings.

American Industrial Hygiene Association journal·2000
See all related articles

Particle concentrations in exhaled breath increase with exercise intensity. These exhaled particles can impact the effectiveness of respirator fit testing using ambient aerosols.

Area of Science:

  • Occupational Health and Safety
  • Respiratory Science
  • Environmental Monitoring

Background:

  • Respirator fit testing is crucial for ensuring worker protection.
  • Ambient aerosols are commonly used for fit testing but can be affected by exhaled breath.
  • Understanding exhaled particle concentrations is necessary to refine fit testing methodologies.

Purpose of the Study:

  • To quantify particle concentrations in exhaled breath under varying exercise conditions.
  • To assess the influence of physical activity on exhaled particle counts.
  • To determine the implications of exhaled particles for respirator fit testing.

Main Methods:

  • Utilized a laser light scattering particle spectrometer to measure particle number concentrations.

Related Experiment Videos

  • Tested subjects under controlled conditions, including rest and exercise.
  • Employed clean, dry air as the challenge environment and took precautions against extraneous particle generation.

    • Main Results:

    • Exhaled particle concentrations ranged from less than 0.1 to approximately 4 particles/cm³.
    • Subjects at rest exhibited the lowest particle concentrations.
    • Increased respiration rates during exercise led to significantly higher exhaled particle counts.

    Conclusions:

    • Exhaled particle concentration is directly influenced by exercise intensity and respiration rate.
    • High concentrations of exhaled particles can interfere with the accuracy of fit testing for respirators.
    • Current fit testing methods using ambient aerosols may be limited by the variability of exhaled breath particles.