Ecology

Moscow University Soil Science Bulletin

, Volume 66, Issue 1, pp 36-41

First online:

Concentration and distribution of polychlorinated biphenyls in soils of Moscow

  • G. I. AgapkinaAffiliated withFaculty of Soil, Moscow State University Email author 
  • , E. S. EfimenkoAffiliated withFaculty of Soil, Moscow State University
  • , E. S. BrodskiyAffiliated withLaboratory of Analytic Ecotoxicology, Severtsov Institute of Ecology and Evolution Problems, Russian Academy of Sciences
  • , A. A. ShelepchikovAffiliated withLaboratory of Analytic Ecotoxicology, Severtsov Institute of Ecology and Evolution Problems, Russian Academy of Sciences
  • , D. B. FeshinAffiliated withLaboratory of Analytic Ecotoxicology, Severtsov Institute of Ecology and Evolution Problems, Russian Academy of Sciences

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Abstract

The concentration of polychlorinated biphenyls (PCB) in the soils of Moscow has been determined by gas chromatography and high-resolution mass spectrometry (GC-HRMS). The total concentrations of 19 indicator and dioxin-like congeners, as well as PCBs in surface soils, are 2.85–60.62 μg/kg (the most contaminated sample was 4591.99 μg/kg). The average value, excluding the most contaminated sample, is 14.44 μg/kg, which is characteristic of residential areas of industrialized countries. This indicator varies insubstantially depending on the functional zone of the city. The toxicity equivalent of 12 dioxin-like PCBs in soils is 1.92 ng I-TEQ/kg on average and varies in a range from 0.15 to 334.12 ng I-TEQ/kg. The fraction of PCBs in the total toxicity of dioxins and dioxin-like compounds in soil varieties is 16.7–85.4%.

Keywords

soil pollution urban ecosystem polychlorinated biphenyls contribution to dioxin toxicity equivalent