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Air Sampling Research Updates (AIHce EXP 2020 OnDemand)

Course Description:
Recorded at Virtual AIHce EXP 2020


Sampling and Interpretation Errors in Workplace Aerosol Monitoring

Today, a multitude of personal sampling devices, ranging from simple filter collection sampling pumps to sophisticated real-time particle spectrometers, is for workplace aerosol exposure assessments. Regardless of the technology employed, aerosol exposure monitoring may introduce sampling errors and influence the interpretation of the measurements. The aerosol measured by personal samplers may differ substantially from the original aerosol due to factors such as: a) sampling efficiency; b) transport and internal losses; c) sensor response limitations; and d) inadequate sampling and data processing. This study aims to investigate how different sources of sampling error (bias and variability) may affect the measurement of the original aerosol. Understanding the sources and significance of these potential errors enables the industrial hygienist to circumvent the sampling inaccuracies, and accurately assess the health implications of aerosol exposures. Presenter: Dr Winnie Chu, PhD, Nanozen Industries Inc Vancouver, British Columbia, Canada

A Simple Proposition for Improving Industrial Hygiene Air Sampling Methods

This presentation challenges long-held conventions on personal air sampling related to the specification of minimum sampling volumes in air sampling methods. The intention is to stimulate the industrial hygiene profession to think about why we do things the way we do. Introspection is needed if we want to continuously improve the practice of our profession and our commitment to protecting workers. This is especially important as the type of work being performed by the global workforce evolves over time. A blind adherence to the minimum sampling volume requirements specified in most air sampling methods is a practice that should at least be carefully reconsidered given its resulting inefficiencies and potential harm to workers. Presenter: Dr. Samuel Paik, CIH, Lawrence Livermore National Laboratory Livermore, CA, United States of America

Comparison of Air Sampling Methods Currently Available for Peracetic Acid Exposures in Poultry Processing Plants

The evaluation of worker exposure to the antimicrobial peracetic acid (PAA) continues to be a current research need identified by the U.S. Poultry and Egg Association. Discussions with the National Institute of Occupational Safety and Health (NIOSH) have indicated that further examination (i.e., poultry processing environment) is needed to test the methods that have been developed to simultaneously sample hydrogen peroxide and peracetic acid. This study, which was a follow-on study to the pilot analysis of PAA exposure in poultry plants conducted in 2017- 2018, sought to further evaluate the feasibility of assessing the exposure of poultry workers to PAA. Specifically, the study focused on comparing air sampling results between four different commercially available methods for PAA exposure assessment as tested in a processing environment. Presenter: Mrs. Jenny Houlroyd, CIH, Georgia Institute of Technology Atlanta, GA, United States of America

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