V.I.Il'ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences, Vladivostok 690041, Russia.
V.I.Il'ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences, Vladivostok 690041, Russia.
Mar Pollut Bull. 2021 Dec;173(Pt A):112997. doi: 10.1016/j.marpolbul.2021.112997. Epub 2021 Sep 27.
Trace metals in Laptev and East Siberian Sea sediments were analyzed to examine the element distribution pattern and to assess sediment contamination using contamination indices. The maximum Cr, Zn, Ni, Cu, and As concentrations occurred in the deeper parts of the East Siberian and Laptev Seas and the estuarine shelves of the Lena and Yana Rivers, and a high Cd content was observed in the sediment of the eastern part of the East Siberian Sea. The increased Cd concentration could be a result of the large number of phytoplankton supplied by the highly productive waters of the Bering Sea and the sorption capacity of Cd precipitation on Fe and Mn oxyhydroxides in seawater. The mean enrichment factors and geoaccumulation index values for Cr, Ni, Cu, Zn, Pb, and Cd showed no contamination by these metals at any sampling locations; however, slight As enrichment was found, possibly originating from natural sources.
对拉普捷夫海和东西伯利亚海沉积物中的微量元素进行了分析，以检查元素分布模式，并使用污染指数评估沉积物污染情况。在东西伯利亚海和拉普捷夫海的较深部分以及勒拿河和叶尼塞河的河口架上，Cr、Zn、Ni、Cu 和 As 的浓度最高，而在东西伯利亚海东部的沉积物中则观察到较高的 Cd 含量。Cd 浓度的增加可能是由于白令海高生产力水域提供了大量的浮游植物，以及 Cd 在海水中的 Fe 和 Mn 氢氧化物上的沉淀吸附能力。Cr、Ni、Cu、Zn、Pb 和 Cd 的平均富集因子和地积累指数值表明，在任何采样地点都没有这些金属的污染；然而，发现了轻微的 As 富集，可能来自天然来源。
