Spatial distribution of arsenic in surface sediments of the southern Baltic Sea

IF 2.6 3区地球科学 Q2 OCEANOGRAPHY

Oceanologia Pub Date : 2023-04-01 DOI:10.1016/j.oceano.2022.12.002

Marta Szubska, Jacek Bełdowski

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引用次数: 1

Abstract

Arsenic is a ubiquitous chemical element, occurring naturally worldwide. Yet due to its global cycle, its concentrations in the marine environment are manifold higher than the terrestrial background and may pose harm to biota. This is especially relevant for the Baltic Sea, which is very susceptible to any kind of pollution. Arsenic transported to the sea is adsorbed on iron oxides or precipitating as flocculating particulates and finally bounded in sediments. Therefore, despite the contemporary emission cuts, the existing pollution remains or constantly circulates in marine habitats. The purpose of the research was to recognize the spatial distribution of arsenic in the surface sediments of the southern parts of the Baltic Sea. The number of 483 samples allowed us to prepare reliable interpolation of arsenic contents in surface sediments. Although arsenic concentrations in the Baltic Sea can be considered low, in particular areas the levels are significantly higher. The observed arsenic concentrations distribution pattern could be mostly explained by natural transportation and accumulation bottom-type distribution.

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波罗的海南部表层沉积物中砷的空间分布

砷是一种普遍存在的化学元素，在世界范围内自然存在。然而，由于其全球循环，其在海洋环境中的浓度远远高于陆地背景浓度，并可能对生物群造成危害。这对波罗的海来说尤其重要，因为它很容易受到任何污染的影响。砷被输送到海洋中，被氧化铁吸附或以絮凝颗粒的形式沉淀，最终进入沉积物。因此，尽管当代的排放减少，现有的污染仍然存在或不断在海洋栖息地中循环。研究的目的是识别波罗的海南部表层沉积物中砷的空间分布。483个样品的数量使我们能够可靠地插值地表沉积物中的砷含量。虽然波罗的海的砷浓度可以被认为很低，但在某些地区，砷的浓度要高得多。观测到的砷浓度分布格局主要可以用自然运输和积累底型分布来解释。

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

Oceanologia 地学-海洋学

CiteScore

5.30

自引率

6.90%

发文量

审稿时长

146 days

期刊介绍： Oceanologia is an international journal that publishes results of original research in the field of marine sciences with emphasis on the European seas.