This study presents new data on concentration of dissolved trace elements (DTE) in the Lena River–Laptev Sea mixing zone. Mean concentrations of some dissolved heavy metals in the mixing zone of fresh waters of the Lena River and sea waters of the Laptev Sea on the middle shelf and on the outer shelves are: 0.7± 0.05 μМ and 0.5 ± 0.04 μМ for Fe, 0.06 ± 0.01 μМ and 0.07 ± 0.01 μМ for Ni, 0.01 ± 0.003 μМ and 0.003 ± 0.002 μМ for Zn, 59.2 ± 7.4 nМ and 73.4 ± 12.8 nМ for Cu, respectively. Two major groups of DTE distribution were revealed according to their spatial behavior. The Li, V, As, Rb, Sr, Mo, U concentrations increase towards the outer shelf with increasing salinity. In contrast, mean concentrations of Al, Ti, Mn, Fe, Co decrease with increasing distance from the coast. The identified transport of freshwaters to a distance of 400 km is reflected in the distribution of DTE, which suggests that these elements are able to reach to the Central Arctic Ocean.

中文翻译：

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受勒拿河流量影响的拉普捷夫海溶解微量元素分布

这项研究提供了勒拿河-拉普捷夫海混合区溶解微量元素（DTE）浓度的新数据。勒拿河淡水和拉普捷夫海海水混合区中层和外层溶解重金属的平均浓度为： 0.7± 0.05 μМ，Fe 0.5 ± 0.04 μМ， 0.06 ± Ni 分别为 0.01 μМ 和 0.07 ± 0.01 μМ，Zn 分别为 0.01 ± 0.003 μМ 和 0.003 ± 0.002 μМ，Cu 分别为 59.2 ± 7.4 nМ 和 73.4 ± 12.8 nМ。根据空间行为揭示了 DTE 分布的两个主要组。随着盐度的增加，Li、V、As、Rb、Sr、Mo、U 浓度向外陆架增加。相反，Al、Ti、Mn、Fe、Co 的平均浓度随着距海岸距离的增加而降低。 DTE 的分布反映了已确定的淡水向 400 公里范围内的输送，这表明这些元素能够到达北冰洋中部。