Concentration and distribution of polychlorinated biphenyls in soils of Moscow

Autor: D. B. Feshin, E. S. Efimenko, E. S. Brodskiy, G. I. Agapkina, A. A. Shelepchikov
Rok vydání: 2011
Předmět:
Zdroj: Moscow University Soil Science Bulletin. 66:36-41
ISSN: 1934-7928
0147-6874
DOI: 10.3103/s014768741101008x
Popis: 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%.
Databáze: OpenAIRE
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