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Advance in Removal of Organic Compounds from Water Environments and Sediments

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydrology".

Deadline for manuscript submissions: closed (20 December 2022) | Viewed by 2675

Special Issue Editor


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P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia
Interests: testing of marine and fresh water, sediments, soils and suspended matter

Special Issue Information

Dear Colleagues,

Our research team is pleased to announce this Special Issue, which is devoted to the study of the suspended matter distribution and composition. This work is a part of the research program “Marine Ecosystems of the Siberian Arctic”, which was launched by the P.P. Shirshov Institute of Oceanology of the Russian Academy of Sciences in 2007 to study the natural systems of the Kara, Laptev and East Siberian Seas. For this reason, a unified methodological approach was applied to explore the ecosystem of the Arctic shelf zone and its current variability.

As suspended matter originates from numerous sources and can absorb various contaminants, studying its underlying mechanism is important for a comprehensive understanding of sedimentation processes and contaminant transport in marine ecosystems.

The variability in the distribution of suspended matter and its components was studied in the period from August 16 to September 20, 2018 (72nd cruise of the research vessel “Akademik Mstislav Keldysh”). The concentration, fluxes and composition of suspended matter were studied using filtration and sediment traps. These methods allowed for studying the sedimentation processes in various contexts, times and depths.

The suspended matter flux is determined by the amount of matter passing through an area unit per time unit (mg·m-2·d-1) and corresponds to the absolute sedimentary mass. The input of various components, including pollutants, into the surface layer of bottom sediments can be calculated on the basis of vertical fluxes of sedimentary matter.

According to the data we obtained, the concentration of suspended matter in surface seawater varied from 0.2 to 5.9 mg·l-1, with the maximum concentration found in the Blagopoluchiya Bay. Fluxes of particular and organic matter mainly increased towards the sea bottom (up to 13127 and 695 mg·m-2·d-1 accordingly). The terrigenous component prevailed over the autochthonous one in the composition of suspended and organic matter, as well as hydrocarbons.

Prof. Dr. Inna A. Nemirovskaya
Guest Editors

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Keywords

  • suspended matter
  • fluxes
  • bottom sediments
  • carbon flux
  • hydrocarbons
  • Kara Sea
  • Laptev Sea
  • Ob River

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Published Papers (1 paper)

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Research

15 pages, 6205 KiB  
Article
Suspended Matter and Hydrocarbons Fluxes in the Kara and Laptev Seas
by E. V. Koltovskaya and I. A. Nemirovskaya
Water 2022, 14(14), 2278; https://doi.org/10.3390/w14142278 - 21 Jul 2022
Cited by 2 | Viewed by 2316
Abstract
The distribution of suspended particulate matter (SPM) by filtration and the magnitude of its fluxs using sediment traps in the Kara and Laptev Seas (cruise 72 of the R/V Akademik Mstislav Keldysh, August–September 2018) was studied. The composition of the SPM was determined [...] Read more.
The distribution of suspended particulate matter (SPM) by filtration and the magnitude of its fluxs using sediment traps in the Kara and Laptev Seas (cruise 72 of the R/V Akademik Mstislav Keldysh, August–September 2018) was studied. The composition of the SPM was determined by the material composition using an electron microscope, the organic component (Corg and hydrocarbons) and the inorganic component (amorphous silica and calcium carbonate). It was found that the SPM content in surface waters varied from 0.2 to 5.9 mg/L (on average 0.90 mg/L) with a maximum in the Blagopolychia Bay and aliphatic hydrocarbons from 10 to 49 µg/L (average 22 µg/L) with a maximum in the area of the removals of the river Ob. The SPM flux decreased from the surface to the near-bottom horizon only into the Blagopolychia Bay (from 13,127 to 11,900 mg/m2/day), but in most samples the flux increased in the near-bottom horizon with a maximum of 6920 mg/m2/day in the Ob’s discharge water area and correlated with the maximum of the Corg flux 695 mg/m2/day. In the composition of SPM, as well as in organic compounds, including hydrocarbons, allochthonous basically prevailed over autochthonous. Full article
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