Authors: E.A. Shabanov, S.M. Prostov, E.M. Vahyanov

Title of the article: Method of diagnosing the content of electrically contrasting pollutants in a soil sample

Year: 2022, Issue: 4, Pages: 4-12

Branch of knowledge: 1.6.9. Geophysics, geophysical methods of prospecting for minerals

Index UDK: 504.064 : 622.02

DOI: 10.26730/1999-4125-2022-4-4-12

Abstract: The article discusses the main types of soil pollution. The special danger of acid- and alkali-containing ecotoxicants has been substantiated, the main sources of soil contamination with these substances have been identified, including during mining operations. The idea of the proposed geophysical method for diagnosing contamination sites is that a toxic substance filling the pores of the soil changes its electrically conductive properties, the anomalous zone formed in this way can be detected by known wellless methods of electrical exploration. The analysis of the classical dependences of the electrical resistivity of a three-phase medium is given, taking into account the real ranges of structural and textural parameters of sandy-clay soils of Kuzbass. The theoretical dependences of the transition from the electrically conductive properties of the soil to the presence of pollutants - solutions of acids and alkalis - in the pores are given. The main results of the experiment on the determination of the electrical resistance of a soil sample with an increase in the concentration of contamination with a solution of acids and alkalis are considered. Statistical processing of the results obtained as a result of the experiment and comparison of the results of the experiment with the pollution coefficient obtained according to theoretical dependencies was carried out. The effectiveness of using the method of operational monitoring of soil pollution by its electrically conductive properties has been confirmed. Regression dependencies for the express forecast are obtained. Rational ranges of electrophysical monitoring of soil contamination zones with inorganic ecotoxicants have been established.

Key words: ecology soil electroosmosis pollution acid alkali electrical resistance humidity density granulometric composition decontamination

Receiving date: 15.07.2022

Approval date: 30.07.2022

Publication date: 06.10.2022

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