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用近岸沉积物捕集器测定了沙奈奇湾5站位不同深度的汞、沉积颗粒物和有机碳通量。通量值与生产力有一致的季节变化,而且比太平洋值高约1—2个数量级。与水柱中汞浓度值结合,计算出汞在沉积物-水间的分配系数(15~5级)和汞的停留时间(2.4年)。
The near-shore sediment trap was used to measure the mercury, sediment and organic carbon fluxes at five depths of the Shaneici Bay. Flux values are consistent with seasonal changes in productivity and are about 1-2 orders of magnitude higher than the Pacific Ocean. Combined with the mercury concentration in the water column, the partition coefficient of mercury in sediments-water (grades 15-5) and mercury residence time (2.4 years) were calculated.