Evaluation of air-samplers for inhalable particles and respirable particles, and development of a new high-volume-air-sampler for respirable particles.

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Health effects of particulate matters in work environments were concerned. It is important to know not only health effect but also exposure level for risk assessment of the particulate matters. Size of particulate matters, such as inhalable particles or respirable particles, was defined for occupational exposure limits. In this study, sampling instruments for aerosol particles in work environment were assessed using micron size test particles (1 – 10 m).Also we developed a new cyclone-based device for high volume air sampler and evaluated the particle penetration characteristics of the cyclone.