FIELD: environmental safety. SUBSTANCE: method is distinguished with using specially developed graph and relevant formulas describing dependence of allowed concentrations of substances in working zone air on enthalpy (specific formation heat). The method has been approved to be used for quick determinations of allowed concentrations for new chemical components as well as for laboratory simulation of industrial harmfulness effects in order to estimate its danger for health of workers involved. EFFECT: increased accuracy and structural sensitivity of method offering possibility to take prophylactic steps to prevent professional diseases. 1 dwg
