For an exact evaluation of the state of man`s environment and to adopt preventive measures to reduce the effect of human influences on it, it is necessary to know the of pollutants entering the atmosphere from various industrial sources. Chromatography methods of analysis are used in most of the analytical methods proposed for the solution of this problem. They enable the identification of the individual substances or a number of compounds within a given class. The chromato-mass spectrometric (CMS) method using high performance capillary separation overcomes this limitation and makes it possible to identify a considerably larger number of organic pollutants of quite different types. At present a standard method is used in the USA for the determination of critical pollutants in the atmosphere of urban areas, which was developed by the Environmental Protection Agency. There are similar methods in operation in other countries.Investigations in this field are limited in character in the Soviet Union. The present work outlines the results of investigations carried out with respect to sampling and structural identification of volatile organic compounds in the atmosphere of urban areas. The methods are based on the principle of sorption of the organic pounds on a solid carrier withmore » subsequent thermal desorption and transfer of the solid components to the chromatograph of a CMS system. Examples of the use of the adsorption concentration on Tenax type sorbents have been described in the literature. 6 refs., 3 figs., 3 tabs.« less
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