Recorded at Virtual AIHce EXP 2020
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.
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.
Michael Brisson, MS, PMP
Savannah River National Laboratory
United States of America
Katrin Pitzke Co-Presenter
Institute for Occupational Safety and Health of the German Social Accident Insurance
Sankt Augustin, Germany
Mr Steven Verpaele, MSc