[Personal experience in biologic monitoring of exposure to organic solvents].

The paper describes our experience in the application of biological monitoring of occupational exposure to benzene, toluene, xylene, styrene, trichloroethylene and tetrachloroethylene. The importance of adequate selection of indicator, matrix and sampling time is pointed out. Own results are compared with the existing biological exposure indices. The need for actual and strict application of biological exposure indices is emphasized from the point of view of workers' health protection.