[Evaluation of contamination levels of serum and expired air of mechanical rubber production workers exposed to acrylonitrile at work].

To evaluate occupational hazards for workers engaged into mechanical rubber production, the authors determined contents of acrylonitrile in serum and expired air, during occupational exposure and in reference group. Findings are that depending on occupation, age and length of service, acrylonitrile contamination level of expired air has intermittent effect. Main occupations workers are exposed to continuous inhalation of acrylonitrile vapors, with its average concentration of 0.01-0.015 mg/m3 in air of workplace. Acrylonitrile concentration in expired air of this group ranged from 0.0001-0.0009 mg/M3 - that is reliably (p <0.05) higher (5.5 times) than in expired air of the reference group members. Serum levels of acrylonitrile did not differ significantly between the main group and the reference group members.