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Polychlorinated naphthalenes (PCNs) in surface sediments of the Yangtze and Yellow River Estuaries, China |
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| Authors: | GUO Li GAO Lirong LI Aimin XIAO Ke |
| Institution: | 1. Hubei Environmental Monitoring Central Station, Wuhan 430072, Hubei, China;State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences, Beijing 100085, China 2. State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences, Beijing 100085, China 3. Hubei Environmental Monitoring Central Station, Wuhan 430072, Hubei, China |
| Abstract: | The concentrations and congener profiles of polychlorinated naphthalenes (PCNs) in surface sediment samples collected from the Yangtze and Yellow River Estuaries were investigated. PCN congeners (from MoCNs to OCN) were determined by isotope dilution/high-resolution gas chromatography/highresolution mass spectrometry (HRGC-HRMS). The total concentrations of PCNs were 34.3–303.0 pg/g (dry weight, dw) in the Yangtze Estuary samples and 6.2–408.0 pg/g (dw) in the Yellow River Estuary samples, which were lower compared with that in other sediments reported by previous studies. In addition, the remarkably different homologue or congener profiles of PCNs have been obtained in this study. Samples dominated with MoCNs to TrCNs might be attributed to atmospheric deposition and global fractionation, while in other samples taken from the surrounding industrial areas the enrichment of higher chlorinated homologues suggested that the industrial and human activities should be the main potential sources. |
| Keywords: | polychlorinated naphthalenes (PCNs) sediments Yangtze Estuary Yellow River Estuary |
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