, Volume 66, Issue 1, pp 36-41

Concentration and distribution of polychlorinated biphenyls in soils of Moscow

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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%.

Original Russian Text © G.I. Agapkina, E.S. Efimenko, E.S. Brodskiy, A.A. Shelepchikov, D.B. Feshin, 2011, published in Vestnik Moskovskogo Universiteta. Pochvovedenie, 2011, No. 1, pp. 39–45.