Lead levels in Maryland construction workers

Area of Science:

• Occupational Health
• Environmental Health
• Toxicology

Background:

• Lead exposure remains a concern in various industries, including construction.
• Understanding lead exposure sources and levels in construction workers is crucial for public health.
• Previous studies have highlighted potential risks associated with specific construction tasks.

Purpose of the Study:

• To assess blood lead levels in unionized construction workers not currently performing lead work.
• To identify specific work activities and demographic factors associated with elevated lead levels.
• To investigate the relationship between blood lead levels and health status, including blood pressure.

Main Methods:

• A cross-sectional study involving 264 unionized construction workers in Maryland.
• Interviewer-administered questionnaires collected data on demographics, work history, and health.
• Whole blood lead levels were determined via venipuncture.

Main Results:

• Median blood lead level was 7 µg/dL (mean 8.0 µg/dL), with a range of 2-30 µg/dL.
• Workers with history of demolition or hotwork on outdoor structures had significantly higher blood lead levels.
• Higher blood lead levels were associated with older age, cigarette smoking, and African American race.

Conclusions:

• Demolition and hotwork on outdoor structures are associated with increased blood lead levels in construction workers.
• Workplace regulations should address these specific activities to maintain low baseline lead exposure.
• Further research is needed to understand the long-term health implications of these findings.