[Substantiation of maximum allowable concentration of p-chlorophenol in the ambient air of settlements].

A complex toxicological study of the p-chlorophenol was carried out. Single permissible p-chlorophenol MAC in the ambient air at level 0.015 mg/m3, and daily average one 0.

[Toxicological characteristics of sebacic acid and the substantiation of its maximum permissible exposure level in atmospheric air].

Average daily MAC of the sebacic acid in the ambient air established at the level of 0.05 mg/m3 (3-d class of hazard). Data of acute and chronic experiments were noted.

[Hygienic standardization of tin level in the air].

Indices reflecting the functional state of the central nervous system, peripheral blood, enzymes and gonads were used in accordance with the toxico-dynamics of substances. Besides, body mass, behavior of animals, pathomorphological and histochemical indices were studied. 5 concentrations of tin chloride were studied: 400, 80, 15, 3 and 0.