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- W2016574130 abstract "Urban areas in developing countries are facing vast environmental problems as a result of rapid urbanization and industrialization. Of major concern is the contamination of soils which are increasingly becoming sinks for environmental pollutants. However, to date only little is known about the pollution in the megalopolises of developing countries. The aim of this study was to assess the contamination and potential sources of metals, polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) in the urban environment of Addis Ababa, the capital of Ethiopia. The investigation revealed the presence of most of the analyzed pollutants in soil and sediment samples with total concentrations (dry wt) of PAHs ranging from 186 to 3150 µg kg−1, PCBs from 0.4 to 19 µg kg−1, Cu from 14 to 173 mg kg−1, Zn from 36 to 440 mg kg−1, Pb from 9 to 700 mg kg−1, and Ni from 16 to 72 mg kg−1. In addition, polyaromatic sulfur heterocycles, typical for oil and petrol residues, were detected in several soil samples. Source identification approaches revealed that Pb, Zn, and Cu are most likely derived from pyrolytic sources, with elevated values in samples related to waste combustion and traffic emissions. Ni is most probably of geogenic origin. For PCBs it is indicated that they are derived from a single source. However, correlations with technical PCB mixtures were inconsistent. PAHs originate from the combustion of biomass, vehicular exhausts, and petrogenic sources." @default.
- W2016574130 created "2016-06-24" @default.
- W2016574130 creator A5027366737 @default.
- W2016574130 creator A5059384908 @default.
- W2016574130 creator A5075826369 @default.
- W2016574130 creator A5077177617 @default.
- W2016574130 date "2012-12-01" @default.
- W2016574130 modified "2023-09-27" @default.
- W2016574130 title "Contamination and source assessment of metals, polychlorinated biphenyls, and polycyclic aromatic hydrocarbons in urban soils from Addis Ababa, Ethiopia" @default.
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