[On prediction the hygienic standards of chemical substances having a selective action, in the atmospheric air of populated areas].

There are proposed new mathematical models for calculation the TSELs of substances with selective (with a predominant effect on the nervous system, liver and specific irritant action) or polytropic character of influence on the organism body in a single inhalation exposure. For substances with a predominant effect on the nervous system and the simultaneous effect on the kidney, liver and nervous system there was established high correlation between the TSELs and Limac.

[Final results of calculation method determining hygienic norms in workplace air for chemicals with predominant influence on nervous system].

The author suggested a new method estimating hygienic norms in air of workplace, based on short-term experiment that determines toxicometric parameters for chemicals variable in structure, toxicity and jeopardy, affecting mostly nervous system.