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Related Experiment Videos

Personal sampling impactor with respirable aerosol penetration characteristics.

V A Marple, J E McCormack

    American Industrial Hygiene Association Journal
    |December 1, 1983
    PubMed
    Summary

    New single-stage impactors were developed for personal sampling, meeting BMRC, AEC, and ACGIH respirable criteria. These impactors utilize oiled plates to minimize particle bounce, enhancing accuracy in dust monitoring.

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    Area of Science:

    • Occupational Health and Safety
    • Environmental Monitoring
    • Aerosol Science

    Background:

    • Accurate measurement of respirable particles is crucial for assessing workplace exposure.
    • Existing sampling methods may have limitations in particle bounce and adherence.
    • Standardized respirable criteria (BMRC, AEC, ACGIH) guide exposure limits.

    Purpose of the Study:

    • To develop single-stage impactors for personal sampling that meet established respirable criteria.
    • To evaluate the performance of these impactors through experimental calibration.
    • To introduce a method for designing samplers with specific differentiation capabilities.

    Main Methods:

    • Development of three single-stage impactors designed for specific flow rates (2 L/min).
    • Utilized oil-soaked impaction plates to prevent particle bounce.
    • Experimental calibration of impactors against BMRC, AEC, and ACGIH respirable criteria.
    • Testing with coal dust to assess particle bounce characteristics.

    Main Results:

    • Impactors demonstrated penetration characteristics approximating the target respirable criteria.
    • Oiled impaction plates significantly reduced particle bounce, confirmed with coal dust experiments.
    • A design procedure was established to differentiate between AEC and ACGIH criteria.

    Conclusions:

    • The developed single-stage impactors are suitable for personal sampling of respirable dust.
    • The use of oiled plates enhances the reliability of impactor measurements.
    • The new design procedure allows for tailored respirable dust sampling strategies.

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