[Sanitary chemical evaluation and control of hazards in the varnishing ships of the furniture industry].

Using theoretical calculations and personal observations and researches, the authors succeeded in demonstrating that evaporation from lacquered surfaces, particularly in the early period of drying, is the primary source of working environment air pollution with toluene and styrol in the varnishing workshops of furniture factories. Three equations are submitted to calculate the quantities of evaporated volatile components from the lacquer film of the machine, and from the varnished surfaces, equations which have been adopted in the practice of pollution sources' sanitary-chemical assay. Against the background thus outlined, the conclusion is reached that the varnishing machine is by no means the primary source of harmful effect provided the technology of varnish application employed does not require tools of the type of a conveyor line, pointing out furthermore that air pollution from the wheel-barrows, containing varnished details, is the most significant. Proceeding from the results of the research, it is recommended to carry out during of the varnished surfaces in a separate room or in a tunnelled drying room which, under conditions of updated technology of applying varnish, prove the most effective from sanitary hygienic viewpoint since they provide for the lowest toxic-vapour concentrations in the air of the working environment, and for optimal working conditions.