Abstract
In a group of 26 workers exposed to tetraethyllead a correlation was found between the concentration of tetraethyllead in the air and the concentration of diethyllead (r = 0.70) and total lead (r = 0.84) in the urine and also between the excretion of diethyllead and total lead (r = 0.68). The results obtained indicate that diethyllead may be used as a specific indicator of occupational exposure to tetraethyllead.