[Occupational exposure to organic solvent vapors among workers in industrial enterprises of Estonia].

To ascertain the overall picture of occupational exposure to benzene, styrene, acetone and ethanol in workers employed in the industrial enterprises of Estonia, the concentration of solvent vapours in the workers' breathing zone was determined, applying passive monitors. The correlation between urine mandelic acid concentration and that of styrene in the workers' breathing zone was estimated: r = 0.7055; p = 0.02. The results obtained showed that the concentration of benzene, styrene, acetone and ethanol vapours in the workers' breathing zone exceeded in many cases maximum permissible levels (5 mg/m3, 10 mg/m3, 200 mg/m3, 1000 mg/m3).