Research Projects

"Evaluation of a shortened protocol for Controlled Negative Pressure Respirator Fit Testing" (On-Going)

(September 2019 - Present)

  • This project aims to evaluate shortened protocol options to measure the effectiveness and accuracy of a fit test as compared to currently accepted protocols (29 CFR 1910.134). The scope and methodology was finalized fall 2019. The project was paused due to the COVID-19 pandemic; however, data collection will resume in August 2021.
    • Undergraduate student researchers: Riley Duncan, Olivia Dawson, Kinleigh Clanton

"Critical evaluation of air sampling calibration techniques" (Complete)

(August 2018 - December 2020)

  • This project aimed to generate data that facilitates the choice of pressure-drop over volumetric flow rate measurement in the calibration of air sampling trains and raise consciousness regarding the need for published performance data on pressure-drop of air sampling equipment so that the choice for volumetric flow rate calibration, either directly or indirectly, can be expanded. The project was completed in two phases.
    • Phase I examined the relationship between volumetric flow rate and pressure-drop using a multi-variable evaluation. Pressure-drop at different volumetric flow rates was measured under multiple combinations of sampler design, filter brand, and pump type. Segregated and grouped data were used to find central tendency and dispersion estimators of pressure-drop at each of the flow rates specified by the sampler manufacturer. A manuscript summarizing findings was published in the International Journal of Occupational Hygiene.
      • Undergraduate student researcher: Savannah Jones
    • Phase II provided a critical review of the NIOSH jarless method for cyclone calibration. It addressed the rationale behind end point test decisions, apparent procedural gaps and, the scrutiny of test accuracy in contrast to flow rate measurements in a well-controlled, jar protocol. A manuscript summarizing findings is under review by the International Journal of Occupational Hygiene.
      • Undergraduate student researcher: Kara Nix