HYGIENIC SUBSTANTIATION OF SPECIFICATIONS OF QUALITY ATMOSPHERIC AIR CONCERNING GROUPS OF SUBSTANCES FROM THE CLOSE THE CHEMICAL STRUCTURE, IN SIMILAR PHYSICAL PARAMETRES AND UNIDIRECTIONAL CHARACTER OF BIOLOGICAL ACTION
As a result modernisation of existing system of the quality standards of atmospheric air is spent work on revision, the analysis of operating specifications of maximum permissible concentration of polluting substances in atmospheric air and are established uniform specifications of quality of atmospheric air for groups of substances with similar physical and chemical parametres and unidirectional character of their biological action.