Enhanced anthropogenic heavy metal dispersal from tidal disturbance in the Jiaozhou Bay, North China.
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.
Deng
Bing
B
State Key Laboratory of Estuary and Coastal Research, East China Normal University, No. 3663 North Zhongshan Road, Shanghai, China, 200062. dengbing@sklec.ecnu.edu.cn
Zhang
Jing
J
Zhang
Guirong
G
Zhou
Juzheng
J
D002104:Cadmium / Q000032:analysis; D002681:China; D003300:Copper / Q000032:analysis; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000032:analysis*; D007854:Lead / Q000032:analysis; D019216:Metals, Heavy / Q000032:analysis*; D045483:Rivers; D012623:Seawater / Q000032:analysis*; D013054:Spectrophotometry, Atomic; D014874:Water Pollutants, Chemical; D015032:Zinc / Q000032:analysis
D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D002104:Cadmium; D007854:Lead; D003300:Copper; D015032:Zinc