State Key Laboratory of Estuary and Coastal Research, East China Normal University, No. 3663 North Zhongshan Road, Shanghai, China, 200062.
Environ Monit Assess. 2010 Feb;161(1-4):349-58. doi: 10.1007/s10661-009-0751-x. Epub 2009 Feb 10.
Heavy metal contamination in surface sediments of the Jiaozhou Bay was investigated in this study. Sediment sample was collected from the Jiaozhou Bay and its rivers. Heavy metal concentration was determined by inductively coupled plasma atomic emission spectroscopy and graphite furnace atomic absorption spectrometry. The result shows that river sediment in the east coast of the Jiaozhou Bay was heavily polluted especially for the Cu, Pb, Cd, and Zn. A slightly increase of heavy metal concentration was observed at stations near the east coast in the Jiaozhou Bay; however, contaminated sediment from polluted river was constrained mostly near shore within 3-4 km. Downstream decrease of heavy metals in river mouth suggested dilution from strong tidal current. Rapid seaward decline in the east coast and alongshore band dispersal pattern of heavy metals in surface sediment indicated mixing and remobilizing enhanced by large tidal range that regulated dispersal of sediments and anthropogenic heavy metals in the Jiaozhou Bay area.
本研究调查了胶州湾表层沉积物中的重金属污染。从胶州湾及其河流中采集了沉积物样品。采用电感耦合等离子体原子发射光谱法和石墨炉原子吸收光谱法测定了重金属浓度。结果表明，胶州湾东海岸的河流沉积物污染严重，尤其是 Cu、Pb、Cd 和 Zn。在胶州湾东海岸附近的站点观察到重金属浓度略有增加；然而，受污染河流的污染沉积物主要局限在近岸 3-4 公里范围内。河口处重金属的向下游减少表明是由强潮流稀释所致。东海岸和沿岸带的重金属在表层沉积物中的快速向海下降和弥散模式表明，大潮所调节的沉积物和人为重金属在胶州湾地区的弥散，促进了混合和再迁移。
