Institute of Oceanography, National Taiwan University, Taipei 106, Taiwan, ROC.
Institute of Oceanography, National Taiwan University, Taipei 106, Taiwan, ROC.
Mar Pollut Bull. 2022 Aug;181:113840. doi: 10.1016/j.marpolbul.2022.113840. Epub 2022 Jun 19.
Seasonal and spatial distributions of total mercury (THg) in the Danshuei Estuary and adjacent coastal areas near the ocean outfall of Taipei, Taiwan, have been successfully investigated from May 2003 to January 2005. We found spatio-temporal variation in THg levels in the Danshuei coastal area was the result of sources and supplies of Hg. High THg concentrations in sediments and seawater were particularly found near the effluent outfall. Average THg levels (avg.: 9-22 ng L) were much higher than those in surrounding coastal seawaters (avg.:1-2 ng L). Organic carbon contents then played vital roles in controlling water and sedimentary Hg concentrations and occurrences. Hg enrichment factor (EF) as an index of contamination status in surface sediments of the Danshuei coastal area averaged 2.0 ± 0.8 (EFs > 1), indicating an extra non-crustal source from anthropogenic loadings. It implies the Dansheui coastal environment nearby the sewer outfall is facing Hg pollution.
从 2003 年 5 月至 2005 年 1 月，对台湾台北市污水排放口附近的淡水河口和沿海地区的总汞（THg）的季节性和空间分布进行了成功的调查。我们发现，淡水沿海地区 THg 水平的时空变化是 Hg 来源和供应的结果。在污水排放口附近，沉积物和海水中的高 THg 浓度尤为明显。平均 THg 水平（平均值：9-22ng/L）远高于周围沿海海域的水平（平均值：1-2ng/L）。有机碳含量然后在控制水和沉积物 Hg 浓度和存在方面发挥了重要作用。汞富集因子（EF）作为淡水沿海地区表层沉积物污染状况的指标，平均值为 2.0±0.8（EFs>1），表明人为负荷带来了额外的非地壳来源。这意味着污水排放口附近的淡水沿海环境正面临汞污染。
