Blood lead and lung function in Danish solid-waste incineration workers: A cross-sectional study

Area of Science:

• Occupational Health
• Environmental Health
• Toxicology

Background:

• Solid-waste incineration workers face potential exposure to dust and metals like lead.
• While high lead exposure risks are known, health effects of current low-level exposure are not well understood.

Purpose of the Study:

• To investigate blood lead levels and lung function (FEV₁) in Danish solid-waste incineration workers.
• To compare exposure and health outcomes between workers with dusty tasks and controls.

Main Methods:

• Cross-sectional biomonitoring study of 55 male incineration workers.
• Comparison of blood lead levels and forced expiratory volume in 1 second (FEV₁) between 31 dusty-task workers and 24 controls.
• Multivariable regression analysis to adjust for confounding factors.

Main Results:

• No participants exceeded the Danish blood lead reference value (<0.53 µmol/L).
• Workers in dusty tasks exhibited higher blood lead levels and a 2.1-fold increased prevalence of blood lead ≥0.1 µmol/L compared to controls.
• Exposed workers had lower FEV₁ (3.5L) than controls (4.2L), though this difference was not statistically significant after adjustments.

Conclusions:

• Danish solid-waste incineration environments show persistent low-level lead exposure.
• The findings highlight the importance of ongoing exposure controls and the correct use of personal protective equipment for these workers.