Performance of a whole-body human dust inhalation challenge exposure chamber.

ABSTRACT:

Background

Evaluation of the performance of a whole-body human dust exposure chamber is presented in this report.

Methods

The volume of the chamber is 2.13 m³ and it is operated at a flow rate of 1.0 m³/min. Makeup and exhaust air were filtered. A Wright Dust Feeder was used to generate fly ash, the testing agent. An elutriator was used to maintain particles in the respirable range. A Rupprecht and Patashnick PM-10 TEOM, a direct reading instrument, was used to monitor particle concentration. Particle size distributions were determined by a QCM cascade impactor. The evenness of dust concentrations in the chamber was determined gravimetrically.

Results

Dust concentrations measured at different points within the chamber were associated with variabi

SUBMITTER: Pieretti LF 

PROVIDER: S-EPMC6086143 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature