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Assessment of degradation of gas condensate and oil hydrocarbons in a sample of soil illuvial horizon as Polar ecosystems part and soil model for degradation under action of new biological preparations (Bioros and Piksa) in experimental conditions showed that degradation of gas condensate in soil, for example, under Bioros action was faster than degradation of oil. After application of Piksa the process of oil degradation in soil was much faster. The activity of catalase and dehydrogenase enzymes increased with enhanced quantity of biological preparations used for oil contaminated soil remediation.

The risk of chronic and emergency contamination of soils by heavy metals through gas-dust emissions by the method protected by the patent of the Russian Federation No. 2617533 on an invention including contamination diagnostics by means of the dehydrogenase enzyme activity analysis is estimated. This method of diagnostics allows to reduce time, to increase the accuracy and quality of examination on territories with an unsuccessful geoecological situation.