Historical Asbestos Measurements in Denmark-A National Database.

Area of Science:

• Occupational Health
• Environmental Science
• Industrial Hygiene

Background:

• Historical asbestos exposure data are crucial for understanding long-term occupational health effects.
• Assessing past exposure levels helps evaluate the impact of preventive measures and identify trends.

Purpose of the Study:

• To create a harmonized database of historical asbestos fiber concentrations from Danish workplaces.
• To analyze time trends and identify high-exposure work scenarios.

Main Methods:

• Collated, assessed, and refined data from various sources.
• Compiled a database of 9236 asbestos measurements from 1971 to 1997.
• Analyzed concentrations across different occupations, tasks, and industries.

Main Results:

• Asbestos concentrations ranged from 0.003 to 35 fibers/cm³.
• Highest levels were found in construction services (1981-1997).
• Exposure levels showed a clear exponentially decreasing trend over time, with post-1980 data being one-seventh of earlier levels.

Conclusions:

• The historical data, despite limitations, are valuable for identifying specific work scenarios with high past asbestos exposure.
• The findings highlight the effectiveness of implemented measures in reducing asbestos exposure over decades.