Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans in sediments from two Ethiopian Rift Valley Lakes

• Autorzy: Urbaniak M. , Zalewski M.
• Języki publikacji: EN

Abstrakty

EN

The aim of our study was to evaluate surficial sediments from two selected Ethiopian Rift Valley aquatic environments – Lake Awassa and Koka Reservoir, for the occurrence of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). The total concentration of target compounds resulted several times higher in the lake (270.39 pg/g dry weight than in the reservoir (63.17 pg/g d.w.). Similarly, concentrations measured as WHO-Toxic Equivalent (WHO-TEQ) were 23.78 pg TEQ/g d.w. and 4.03 pg TEQ/g d.w., respectively. Obtained results, in reference to the Canadian Sediment Quality Guidelines, exceed the limit of 0.85 pg TEQ/g d.w. in both lake and reservoir, as well as probable effect level (PEL) of 21.5 pg TEQ/g d.w. in lake sediment, and thus represent high pollution levels of analyzed samples.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2011
• Tom: 20
• Numer: 4
• Opis fizyczny: p.1069-1074,fig.,ref.

Twórcy

autor

Urbaniak M.

• International Institute of the Polish Academy of Sciences European Regional Centre for Ecohydrology under the auspices of UNESCO, Tylna 3, 90-364 Łódź, Poland
• Department of Applied Ecology, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland

autor

Zalewski M.

• International Institute of the Polish Academy of Sciences European Regional Centre for Ecohydrology under the auspices of UNESCO, Tylna 3, 90-364 Łódź, Poland
• Department of Applied Ecology, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland

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