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Concentrations of polycyclic aromatic hydrocarbons (PAHs) were determined in surface sediments and one dated sediment core from the Songhua River, Northeast China. The total concentration of 15 PAHs (16 priority pollutants designed by the United States Environmental Protection Agency minus naphthalene) in the surface sediments ranged from 16 to 421 ng/g dry weight. An evaluation of PAH sources based...
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