Heavy Metals and Organic Carbon in the Bottom Sediments of Shallow Bights of the Peter the Great Bay

IF 0.7 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS

Geochemistry International Pub Date : 2023-07-24 DOI:10.1134/S0016702923060083

A. A. Ryumina, P. Ya. Tishchenko, E. M. Shkirnikova

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Abstract—

A noticeable feature of labile heavy metals is that they are highly prone to be to bioaccumulated and bioassimilated in natural environments. When in high concentrations, these metals are toxic to living organisms, as is particularly evident in the coastal shallow marine zones, which are most strongly affected by anthropogenic processes. This paper presents data on the contents of heavy metals, concentrations of organic carbon, and the granulometric composition of bottom-sediment cores in three shallow bights of the Peter the Great Bay, in two of which (Voevoda and Novgorodskaya bights), large bottom areas are overgrown with seagrass Zostera marina L. (sea zostera, ZM). Data on the vertical distribution of heavy metals and organic carbon in the cores showed that the highest concentrations of Zn and Cu (up to 204 and 91 mg/kg, respectively) occur in samples from Voevoda bight, and the highest concentrations of Mn and Pb (up to 344 and 45 mg/kg, respectively) were found in Novgorodskaya bight, where meadows of the seagrass grow. The highest Cr, Ni, and Co contents (up to 69, 31, and 13 mg/kg, respectively) were identified in Uglovoy bight, where sea grass is practically absent.

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彼得大帝湾浅海底部沉积物中重金属和有机碳

摘要:不稳定重金属的一个显著特征是它们在自然环境中极易被生物积累和生物同化。当这些金属浓度很高时，它们对生物体是有毒的，这一点在受人为过程影响最严重的沿海浅海区尤其明显。本文介绍了彼得大帝湾三个浅水湾的重金属含量、有机碳浓度和底部沉积物岩心的颗粒组成数据，其中两个浅水湾(Voevoda和Novgorodskaya)底部大面积生长着海草Zostera marina L. (sea Zostera, ZM)。岩心中重金属和有机碳的垂直分布数据表明，在Voevoda海域样品中Zn和Cu的浓度最高(分别为204和91 mg/kg)，而在海草草甸生长的Novgorodskaya海域样品中Mn和Pb的浓度最高(分别为344和45 mg/kg)。Cr、Ni和Co含量最高(分别高达69、31和13 mg/kg)的是几乎没有海草的Uglovoy bight。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geochemistry International 地学-地球化学与地球物理

CiteScore

1.60

自引率

12.50%

发文量

审稿时长

1 months

期刊介绍： Geochemistry International is a peer reviewed journal that publishes articles on cosmochemistry; geochemistry of magmatic, metamorphic, hydrothermal, and sedimentary processes; isotope geochemistry; organic geochemistry; applied geochemistry; and chemistry of the environment. Geochemistry International provides readers with a unique opportunity to refine their understanding of the geology of the vast territory of the Eurasian continent. The journal welcomes manuscripts from all countries in the English or Russian language.