Polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins and dibenzofurans in marine and lacustrine sediments from the Shandong Peninsula, China.
Polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins and dibenzofurans in marine and lacustrine sediments from the Shandong Peninsula, China.
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DOI：
10.1016/j.jhazmat.2009.11.024
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发表时间：
2010-04
影响因子：
13.6
通讯作者：
Jing Pan;Yongliang Yang;C. Geng;L. Yeung;Xinde Cao;Tianyou Dai
中科院分区：
文献类型：
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作者：
Jing Pan;Yongliang Yang;C. Geng;L. Yeung;Xinde Cao;Tianyou Dai
测定了山东半岛渤海、黄海沿岸水域和湖泊沉积物中多氯联苯（PCBs）、多氯二苯并对二恶英和二苯并呋喃（PCDD/Fs）的浓度。沉积物中测得的 50 种同系物 (Σ50PCBs) 的总 PCB 浓度范围为 273.7 至 644.5pgg−1dw（干重）。湖泊沉积物中的 PCB 同系物分布与海洋沉积物中的不同。 TriCBs和TetraCBs是海洋沉积物中的主要同系物，而在南四湖沉积物中，PCB同系物的贡献相似。 2,3,7,8-PCDD/Fs 的总浓度范围为 6.2 至 27.4pgg−1dw。山东半岛湖泊和沿岸海域沉积物中2,3,7,8取代PCDD/F的同系物分布总体相似。他们的特点是高 OCDD，其次是 1,2,3,4,6,7,8-HpCDD 和 OCDF。沉积物中PCDD/Fs的同系物谱与我国五氯苯酚和五氯酚钠产品中主要优势PCDD/Fs的谱一致。 PCDD/F-TEQ 范围为 0.11 至 0.80pgTEQg−1dw。类二恶英 PCB-TEQ 的浓度范围为 0.03 至 0.08pgTEQg−1dw，主要来自 PCB126。沉积物中发现的 PCB 和 PCDD/F 浓度从背景水平降至低污染水平。
Concentrations of polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in sediments from Bohai Sea and Yellow Sea coastal waters and lakes in Shandong Peninsula were determined. The total PCB concentrations of the measured 50 congeners (∑50PCBs) in the sediments ranged from 273.7 to 644.5pgg−1dw (dry weight). The PCB congener profiles in the lacustrine sediments were different from those in the marine sediments. TriCBs and TetraCBs were the dominant homologues in marine sediments, whereas in the sediments from the Nansi Lakes, contributions of PCB homologues were similar. The total concentrations of 2,3,7,8-PCDD/Fs ranged from 6.2 to 27.4pgg−1dw. The congener profiles of 2,3,7,8-sustituted PCDD/Fs for the sediments were generally similar for both the lakes and the coastal sea areas in Shandong Peninsula. They were characterized by high OCDD, followed by 1,2,3,4,6,7,8-HpCDD and OCDF. The congener profiles of PCDD/Fs in the sediments were consistent with the profiles of main dominant PCDD/Fs in pentachlorophenol and sodium pentachlorophenate products in China. PCDD/F-TEQ ranged from 0.11 to 0.80pgTEQg−1dw. The dioxin-like PCB-TEQ had concentrations ranging from 0.03 to 0.08pgTEQg−1dw, mainly from PCB126. PCBs and PCDD/Fs concentrations found in the sediments were from background to low polluted levels.