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Personal thoracic CIP10-T sampler and its static version CATHIA-T

J F Fabriès1, P Görner, E Kauffer

  • 1Institut National de Recherche et de Sécurité, Vandoeuvre, France.

The Annals of Occupational Hygiene
|October 30, 1998
PubMed
Summary

Two new personal aerosol samplers, CIP10-T and CATHIA, were evaluated for sampling the thoracic fraction. Both demonstrated low bias (<10%) and good accuracy across various particle sizes, ensuring reliable aerosol monitoring.

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Area of Science:

  • Environmental Science
  • Occupational Health
  • Aerosol Science

Background:

  • Personal aerosol samplers are crucial for assessing inhalation exposure.
  • Existing samplers may not accurately capture specific particle size fractions like the thoracic fraction.
  • Developing and validating new samplers is essential for improved exposure assessment.

Purpose of the Study:

  • To design and evaluate two new personal aerosol samplers, CIP10-T and CATHIA, for sampling the conventional CEN thoracic fraction.
  • To determine the particle collection efficiency, bias, and accuracy of the developed samplers.
  • To assess sampler performance against established standards.

Main Methods:

  • The CIP10-T sampler was designed for thoracic fraction sampling, while the CATHIA sampler collected size-selected particles on a filter.

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  • Particle efficiency was measured in a wind tunnel at low air velocity (16 cm/s) with a flow rate of 7 L/min.
  • Two methods were employed for particle size distribution analysis: Aerodynamic Particle Sizer (TSI) and Coulter counter.
  • Bias and accuracy maps were calculated following CEN standards.

    • Main Results:

    • Both CIP10-T and CATHIA samplers exhibited a bias not exceeding 10% across a wide range of particle sizes.
    • The CIP10-T sampler showed accuracy better than 10% for median aerodynamic diameter (MMAD) between 4-14 microns (GSD=2).
    • The CATHIA-T sampler demonstrated accuracy better than 10% for MMAD up to 12 microns and 10-20% for MMAD 13-20 microns (GSD≥2).

    Conclusions:

    • The CIP10-T and CATHIA samplers are reliable tools for assessing thoracic aerosol fractions.
    • Both samplers meet performance criteria for bias and accuracy, supporting their use in occupational and environmental monitoring.
    • The validated performance of these samplers contributes to more accurate personal exposure assessments.