Neurotoxicity of exposures to aluminium welding fumes in the truck trailer construction industry

The pre-/postshift average Al-urine concentrations of welders were in the range of 130-153 μg/l. Welders showed significantly poorer performance in symbol-digit substitution, block design, and to some extent in switching attention. However, motor performance and other measures did not differ between welders and controls. Summing up, the results give no clear hints on neurological changes in Al-welders.