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1993年7－8月，在上海长江口南岸和杭州湾北岸淤泥质潮滩不同地貌部位，采集表层沉积物和柱状沉积物样品，采用筛析法、离心法、火焰原子吸收法、210Pb法等分别对沉积物粒度、重金属总量、不同粒级重金属含量以及沉积速率等进行了分析和测定。结果表明，潮滩沉积物重金属的空间分布格局并不受沿岸排污的直接影响，而与沉积动力作用密切相关。在水动力条件较弱的淤涨岸段和高潮滩部位，伴随着细颗粒泥沙的大量堆积，Cu，Zn，Pb，Cr，Cd等重金属元素明显趋于富集。
From July to August 1993, samples of surface sediments and columnar sediments were collected from different topography of the muddy tidal flat on the south bank of the Changjiang Estuary and the north bank of Hangzhou Bay by using sieve analysis, centrifugation, flame atomic absorption spectrometry and 210Pb method Sediment particle size, total heavy metals, heavy metal content and sedimentation rate of different fractions were analyzed and determined. The results show that the spatial distribution pattern of heavy metals in the tidal flat sediments is not directly affected by the coastal discharge but closely related to the sediment dynamic. Heavy metals such as Cu, Zn, Pb, Cr and Cd were obviously enriched with the accumulation of fine sediment in the silt-bank section and the high tide beach with weaker hydrodynamic conditions.