[The control of the level of nitrogen oxides in the air of mines when using diesel-drive machines]. / O kontrole za soderzhaniem oksidov azota v vozdukhe shakht pri ispol'zovanii mashin s dizel'nym privodom.

Laboratory and occupational studies evaluated up-to-date methods determining nitrogen oxides in atmosphere of mines. The authors elaborated new methods assessing nitrogen oxides in the air and suggested some improvements of the present techniques in accordance with specific conditions of mines. A novelty is a correction coefficient for assessment of nitrogen oxides through express method (indicator tubes).

[Hygienic expert evaluation in the standardization of the use of polymer and other materials in food industry]. / Opyt gigienicheskoi ékspertizy pri reglamentatsii primeneniia polimernykh i drugikh materialov v pishchevykh otrasliakh promyshlennosti.

Numerous polymers and other materials to be used in food industry should be rapidly assessed from a hygienic view-point. Experience gained in this sphere permits us recommend a method for rapid hygienic expert evaluation of such materials. Approaches to, and potentialities of such expert evaluation are demonstrated.

[Analysis of organic and inorganic components of Diesel engine exhaust absorbed on ore-mine aerosol particles]. / Issledovanie sorbirovannykh na chastitsakh rudnichnogo aérozolia organicheskikh i neorganicheskikh komponentov vykhlopa dizel'nykh dvigatelei.

The article proposes results of research into exhausts' major components absorption in accumulated and floating dusts in ore mines in which self-propelled diesel vehicles are predominantly used. It was established that ore-mine aerosol particles had a large specific surface and contained a high percentage of carbon-black (1,1-35.1%). Different results were received for both organic and non-organic substances' sorption indices. In the samples, in addition to 3,4-benzapyrene, 11 more polycyclic aromatic hydrocarbons were identified, with concentrations 10-15 times higher than those of 3,4-benzapyrene.

[Air pollution by 3,4-benzo(a)pyrene in mines using self-propelled equipment with diesel motors]. / Zagriaznenie vozdushnoi sredy rudnikov, ispol'zuiushchikh samokhodnuiu tekhniku s dizel'nymi dvigateliami, s 3,4-benz(a)pirenom.

The study was designed to analyse air pollution by 3,4-benz(a)pyrene released together with exhaust gases in 3 underground mines where self-propelled machines with diesel engines are used. Concentration levels for 3,4-BP have been identified in air, dust, sweeping away and scraping off the walls of the mine working surface. It is demonstrated that in a great number of samples 3,4-BP concentration exceeds MAC. A technique for 3,4-BP air sampling and analysis has been studied by means of liquid chromatography with ultraviolet detection. Hygienic recommendations on decreasing 3,4-BP release into the mine air are set forth.