Enhancement of metrological support in measuring the composition and concentrations of pollutants in wear products of automobile tires

Abstract

The article shows that the high environmental hazard of tires is caused not so much by the mass of pollutants of dispersed particles, but by the toxic properties of the materials used in their manufacture and the impurities contained in them. It is emphasized that when assessing the quality of automobile tires, there are no reliable indicators and methods that allow determining the level of their environmental hazard. The necessity of changing the regulatory requirements for assessing the quality of automobile tires by expanding the list of their environmental indicators, developing methods for controlling tire emissions, both at the production stages and during operation, is justified. A list of pollutants subject to regulation in the assessment of the environmental safety of automobile tires and methods of their measurement are proposed. The main pollutants subject to regulation and control are: benz(α)pyrene and other polycyclic aromatic hydrocarbons, as well as aromatic hydrocarbons and N-nitrosamines. The results of quantitative assessment of the composition and concentrations of harmful substances in the wear products of automobile tires are presented. The authors substantiate the level of rationing and methods that can be used in assessing the environmental hazard of automobile tires, both in the production process and in the conditions of their operation. It is proposed to use the principles of dose assessment of the toxicity of the total aerogenically absorbed dose of pollutants emitted in the wear products of automobile tires.