AAAR 37th Annual Conference October 14 - October 18, 2019 Oregon Convention Center Portland, Oregon, USA
Abstract View
Respiratory Deposition of Ultrafine Welding Fume Particles
WEI-CHUNG SU, Yi Chen, Marcio Bezerra, Jun Wang, University of Texas Health Science Center at Houston
Abstract Number: 121 Working Group: Control and Mitigation Technology
Abstract In this study, a mobile aerosol lung deposition apparatus (MALDA) was developed and applied to study the respiratory deposition of ultrafine welding fume particles for performance evaluation. A series of respiratory deposition experiments were carried out using the MALDA to investigate the deposition of ultrafine welding fume particles in different generations of human airways. The results showed that the fractional deposition of ultrafine welding fume particle in the human tracheobronchial airways down to the 9th airway generation could be readily, efficiently, and systematically measured by the MALDA. This result suggests that the newly developed MALDA has the potential to be used in real-world occupational settings to estimate respiratory deposition of ultrafine welding fume particles as well as for other workplace ultrafine particles.