Abstract
Analysis of benzo[a]pyrene contamination from an aged contaminated chernozemic, meadow-chernozemic and alluvial soils under the effect of aerotechnogenic emissions from the Novocherkassk regional power plant have been revealed on the basis of annual monitoring studies from 2008 to 2012. A new ecologically clean highly-effective express-method of subcritical water extraction has been developed for determination of benzo[a]pyrene from soils of the emissions zone. It has been found that the 5-km zone to the northwest and west from the power station, which coincides with the predominant wind directions, is most subjected to contamination by benzo[a]pyrene, with the maximum accumulation at a distance of about 1.6 km from the emissions source. The vertical distribution coefficients of benzo[a]pyrene between the 0-5 cm and 5-20 cm layers closely correlate with the contents of physical clay, clay, organic matter and cation exchange capacity. It has been shown that the content of benzo[a]pyrene in the soil is an indicator of the technogenic pressure impact on the areas, for which the combustion products of hydrocarbon fuel are the major pollutants.
Highlights
Polycyclic Aromatic Hydrocarbons (PAHs) are a typical class of persistent organic compounds derived from natural sources such as forest fires or/and anthropogenic processes such as urban and industrial activities and are prevalent in the environment
When the distance from the emission source increases, the level of contamination with BaP gradually decreases to a minimum at 15 km from the plant, where C0-20 varies in the range of 0.6-1.5 Maximum Permissible Concentration (MPC) and C0-5 does not exceed 2 MPC
The tendencies in the distribution and accumulation of BaP in the studied soils coincided during the 6 years of monitoring studies
Summary
Polycyclic Aromatic Hydrocarbons (PAHs) are a typical class of persistent organic compounds derived from natural sources such as forest fires or/and anthropogenic processes such as urban and industrial activities and are prevalent in the environment. Sixteen PAHs compounds have been recommended as priority pollutants by the United States Environmental Protection Agency (USEPA) because of their carcinogenicity, mutagenicity and toxicity (Anonymous, 2002; GOST 17.4.1.02.-83, 2004; Jian et al, 2004; Wenzl et al, 2006). These compounds are likely to accumulate in soils for many years because of their persistence and hydrophobicity. In Russia, the Maximum Permissible Concentration (MPC) of BaP is 0.02 mg kg−1 for all soils; in other countries, this value varies in the range of 0.1-2.7 mg kg−1
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: American Journal of Biochemistry and Biotechnology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
