Migration of Beryllium via Multiple Exposure Pathways among Work Processes in Four Different Facilities

Area of Science:

• Occupational Hygiene
• Environmental Science
• Materials Science

Background:

• Inhalation of beryllium is a known cause of sensitization.
• Dermal exposure to beryllium may also play a critical role in occupational health.
• Understanding exposure pathways is crucial for mitigating beryllium-related health risks.

Purpose of the Study:

• To investigate the relationships among airborne, dermal (glove), and surface beryllium exposure pathways.
• To identify specific jobs and processes with elevated beryllium exposure levels.
• To determine if exposure discrepancies correlate with previously identified high-risk jobs.

Main Methods:

• Beryllium levels were measured in air samples, on cotton gloves, and on work surfaces across four facilities.
• Statistical analyses, including summary statistics and correlation analyses, were performed.
• Exposure ranking strategies were employed to identify jobs with higher exposures.

Main Results:

• Strong positive correlations were observed between air, glove, and surface beryllium measurements (rp ≥ 0.69).
• Highest beryllium levels were found in jobs involving hot processes and powder handling in beryllium metal and oxide production.
• Jobs previously identified as high-risk showed elevated levels in at least one exposure type (air or dermal).

Conclusions:

• Both inhalation and dermal exposure pathways are relevant in occupational beryllium exposure.
• Discrepancies between air and surface/dermal beryllium levels highlight the need for further investigation.
• Comprehensive exposure assessment considering multiple pathways is essential for effective risk management in beryllium-handling industries.