Polychlorinated dibenzo-<Emphasis Type="Italic">p</Emphasis>-dioxins and dibenzofurans in Moscow soils |
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Authors: | G I Agapkina E S Brodskii A A Shelepchikov D B Feshin E S Efimenko |
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Institution: | 1.Faculty of Soil Science,Moscow State University,Moscow,Russia;2.Laboratory of Analytical Ecotoxicology,Severtsov Institute of Ecology and Evolution,Moscow,Russia |
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Abstract: | Data are given on the content of polychlorinated dibenzo-p-dioxins (PCDD) and 10 polychlorinated dibenzofurans (PCDF) with chlorine atoms in positions 2, 3, 7, and 8 in the upper horizons
of Moscow soils, in the structure of profiles of congeners and their accumulation in the city top-soil. An average equivalent
of toxicity of the totality of PCDD/PCDF is in the range of 48.66–0.27 ng of I-TEQ/kg, while for 2,3,7,8-TCDD, it reaches
1.78 ng of I-TEQ/kg, which is in accordance with permissible European norms. About half the stress of dioxins on urban topsoil-soil
is determined by the most toxic congeners 2,3,7,8-TCDD, 2,3,4,7,8-PeCDF, and 1,2,3,7,8-PeCDD, which have a high ability to
accumulate in adipose tissue of organisms. The concentration coefficients of PCDD/PCDF congeners in the soil are in tens of
units. |
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