Vane C H, Harrison I, Kim A W
British Geological Survey, Kingsley Dunham Centre, Keyworth, Nottingham, NG12 5GG, United Kingdom.
Sci Total Environ. 2007 Mar 1;374(1):112-26. doi: 10.1016/j.scitotenv.2006.12.036. Epub 2007 Jan 25.
Sediments from the Mersey Estuary were analysed for polycylic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). Total PAH concentrations ranged from 626 to 3766 microg/kg and total PCB concentrations ranged from 36 to 1409 microg/kg. These concentrations are intermediate in comparison to other U.K estuaries with similar histories of industrialisation and urbanisation. The distribution of individual PAHs were consistent throughout the Mersey Estuary, this together with molecular indices suggests mainly pyrolitic inputs, augmented by a variety of industrial petrogenic sources. Comparison of tri-to-hepta PCB congeners revealed multiple sources and inputs throughout the estuary. A sediment core collected in close proximity to Garston Docks revealed the take-off, peak pollutant input and recent decline of PCB pollution. However, a second depth profile of sediments at Ellesmere Port showed little change in total or individual PCB concentrations due to extensive sediment reworking and mixing.
对默西河河口的沉积物进行了多环芳烃（PAHs）和多氯联苯（PCBs）分析。总PAH浓度范围为626至3766微克/千克，总PCB浓度范围为36至1409微克/千克。与英国其他具有类似工业化和城市化历史的河口相比，这些浓度处于中等水平。默西河河口各PAH的分布是一致的，这与分子指标一起表明主要是热解输入，各种工业源成因来源使其增加。三至七氯PCB同系物的比较揭示了整个河口的多种来源和输入。在加斯顿码头附近采集的一个沉积物岩芯显示了PCB污染的起始、污染物输入峰值和近期下降情况。然而，埃尔斯米尔港沉积物的第二个深度剖面显示，由于沉积物的广泛再加工和混合，总PCB浓度或单个PCB浓度几乎没有变化。
