Exposure risk assessment in an aluminium salvage plant.

Introduction: A cross-sectional study was conducted to evaluate possible nervous or respiratory system effects from occupational aluminium exposure.

Methodology: Exposed workers in Al salvage plant were compared with controls. The investigation involved a standardized occupational and medical history and assessments of Al levels in ambiance, serum, and urine. This was combined with an evaluation of respiratory complaints, lung, and cognitive functions.

Results: Thirty workers exposed to Al were matched to 60 individuals without exposure to Al. Significantly higher internal doses of Al in urine were found in exposed workers (11.59 microg/L), when compared with the controls (4.37 microg/L). Few high Al atmospheric levels were obtained (0.12-10.86 mg/m3). No significant differences concerning respiratory or neurological symptoms prevalence between the two groups were reported.

Discussion: Chronic exposure to Al dust, at the levels documented in this study over the German limit values, does not induce measurable cognitive decline.