April 2021 - Air Sampling/Instrumentation Analysis/IAQ

Apr. 20: An Evaluation of Common Chemical Contaminants in the Air

Tuesday, April 20, 2021

1:00 - 2:00 pm ET

Earn 1 Contact Hour

Member $49 | Nonmember $59 | Student $25

There are two purposes for understanding the chemical composition of indoor air: 1) to determine what harmful effect, if any, the air is having on the occupants and 2) to trace those chemical contaminants to their sources. Sometimes the harmful effect is clear with noticeable symptoms or unpleasant odors, but often the result is subtle such as difficulty concentrating lethargy, or long-term consequences. Source control is by far the most effective means of improving indoor air quality. If the source cannot be located technologies must be employed to reduce contaminant levels, which can be expensive and sometimes ineffective. Air is a moving fluid (always changing). It is critical to understand the variables that affect the chemical composition and concentration as well as what is typical and what could be an outlier worthy of additional investigation. This session includes: a) the basics of indoor air quality including the variables that affect it, b) differences in commercial and residential environments, c) the important contributors to poor indoor air quality, d) trends in time or region, e) health and odor concerns, and f) techniques to evaluate indoor air.


Learning Outcomes

Upon completion, the participant will be able to:
• Identify the most important contributors to poor indoor air quality.
• Classify regional and seasonal factors that can affect indoor air quality.
• Develop a strategy to address the chemical contaminants in the indoor environment.

Presenter:
Alice Delia, PhD
Prism Analytical Technologies
MOUNT PLEASANT, MI United States of America

Questions? Contact DLAssistant@aiha.org.

Apr. 29: Sampling and Analytical Challenges in Meeting Ever Lower OELs for Metals and Metalloids

Thursday, April 29, 2021

1:00 - 2:00 pm ET

Earn 1 Contact Hour

Member $49 | Nonmember $59 | Student $25

Occupational exposure limit values for metals and metalloids are decreasing especially for metals or metalloids identified as carcinogens or sensitizers. Increasingly, size-specific sampling fractions (e.g., inhalable, respirable) are prescribed by regulation. These very low limit values bring challenges to the measurement methods. All portions of these methods (e.g., sampling, sample dissolution, and the analytical methods) must be optimized dramatically in order to attain lower detection limits while maintaining high data quality. For sampling, this requires new high-flow samplers for inhalable and respirable fractions. For laboratory analysis, techniques must consider sensitivity, reagent purity, and solubility issues for metal compounds. Some of the current standardized methods may no longer be adequate for the lower elemental occupational exposure limit values. This session offers three presentations from three countries on the subjects of nickel aerosol samplers, beryllium sampling and analysis, and a new microwave digestion method for total metal content in workplace dust.

Learning Outcomes

Upon completion, the participant will be able to:

  • Discuss the challenges in trace-level sampling and analysis for metals and metalloids.
  • Identify methodologies to meet particle size-specific sampling requirements.
  • Describe the considerations for sample preparation and laboratory analysis for metals and metalloids.

Presenters:

  • Michael Brisson, MS, PMP
  • Katrin Pitzke Co-Presenter
  • Mr Steven Verpaele, MSc

Questions? Contact DLAssistant@aiha.org.