Ecological Safety of Coastal and Shelf Zones of Sea Ecological Safety of Coastal and Shelf Zones of Sea 2413-5577 20230409 Research Article Organochlorine Xenobiotics in the Salgir River Ecosystem: Content, Distribution, Ecological Risk Malakhova L. V.
Russian Federation
malakh2003@list.ru Karpova E. P.
Russian Federation
karpova_jev@mail.ru Belogurova R. E.
Russian Federation
prishchepa.raisa@yandex.ru Gubanov V. V.
Russian Federation
gubanov76@mail.ru Prokopov G. A.
Russian Federation
Chesnokova I. I.
Russian Federation
mirenri@bk.ru Kurshakov S. V.
Russian Federation
kurshackov@yandex.ru Statkevich S. V.
Russian Federation
Shavriev D. G.
Russian Federation
shavrievd@gmail.com Ovechko S. V.
Russian Federation
hgbs1@yandex.ru Research Center for Freshwater and Brackish Water Hydrobiology Kherson Russian Federation A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS Sevastopol Russian Federation V. I. Vernadsky Crimean Federal University Simferopol Russian Federation 20 12 2023 2023 4 116 133 21 06 2023 11 10 2023 15 08 2023 Copyright © 2023, L. V. Malakhova, E. P. Karpova, R. E. Belogurova, V. V. Gubanov, G. A. Prokopov, I. I. Chesnokova, S. V. Kurshakov, S. V. Statkevich, D. G. Shavriev, S. V. Ovechko 2023 L. V. Malakhova, E. P. Karpova, R. E. Belogurova, V. V. Gubanov, G. A. Prokopov, I. I. Chesnokova, S. V. Kurshakov, S. V. Statkevich, D. G. Shavriev, S. V. Ovechko https://creativecommons.org/licenses/by-nc/4.0/ https://ecological-safety.ru/en/repository/issues/2023/04/09/

The content and distribution of organochlorine pesticides of the DDT group and polychlorinated biphenyls (PCBs) in water, amphipods, fish and sediments of the Salgir River, as well as in bottom sediments of the Biyuk-Karasu River, were determined. Samples were collected in May and July 2023. An analysis of organochlorine xenobiotics was performed using a GC Chromatec-Crystal 5000 (Russia), equipped with an electron capture microdetector. The ΣDDT concentration in water ranged from 0.53 in the area of the village of Dobroye up to 14.91 ng/L in the village of Molochnoye, whereas Σ6PCB changed from 0.50 to 37.87 ng/L, respectively. The lowest ΣDDT content (9.06 ng/g) in sediments was detected in the village of Dobroye, the highest one was registered in the village of Molochnoye (71.69 ng/g). The minimum Σ6PCB concentration (3.41 ng/g) was determined in the area of the village of Beloglinka, the maximum one was in the village of Molochnoye (61.88 ng/g). The pollutants distribution in water and bottom sediments indicates the presence of local DDTs and PCBs sources along the river between the villages of Beloglinka and Molochnoye. The lowest pollutants concentrations in hydrobionts were determined in muscles of schnieder caught near the village of Dobroye. The highest ones were registered in the spined loaches caught near the village of Novogrigoryevka and in the bleak caught near the village of Molochnoye. In these fish, the maximum permissible concentration ΣDDT (300 ng/g wet weight) was exceeded. The obtained results were compared with water and sediments pollution in other Crimean, European and Asian rivers. An environmental risk assessment showed that pollution levels are not of concern in the area above Simferopol. In other sampling sites, high environmental risk was noted. The results showed that the environmental risk of PCBs pollution near the village of Molochnoye was higher than that of DDTs pollution.

 DDT PCBs water bottom sediments hydrobionts environmental risk Salgir River This work was supported by the state contracts with the RC FBH "Study of peculiarities structure and dynamics of freshwater ecosystems of the Northern Black Sea coast" (no. 123101900019-5) and partially within the state contracts of IBSS of RAS "Molismological and biogeochemical foundations of homeostasis of marine ecosystems" (no. 121031500515-8), "Regularities of formation and anthropogenic transformation of biodiversity and bioresources of the Azov-Black Sea basin and other areas of the World Ocean" (no. 121030100028-0) and "Fundamental studies of population biology of marine animals, their morphological and genetic diversity" (no. 121040500247-0).

About the authors:

Ludmila V. Malakhova, Senior Research Associate, Research Center for Freshwater and Saltwater Hydrobiology (87 Marii Fortus St, Kherson, 273003, Russian Federation); Leading Research Associate, A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS (2 Nakhimova Ave, Sevastopol, 299011, Russian Federation), PhD (Biol.), ORCID: 0000-0001-8810-7264, Scopus Author ID: 35604200900, ResearcherID: E-9401-2016, malakh2003@list.ru

Evgeniia P. Karpova, Senior Research Associate, Research Center for Freshwater and Saltwater Hydrobiology (87 Marii Fortus St, Kherson, 273003, Russian Federation); Senior Researcher, A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS (2 Nakhimova Ave, Sevastopol, 299011, Russian Federation), PhD (Biol.), ORCID: 0000-0001-9590-9302, Scopus Author ID: 26639409000, ResearcherID: T-5944-2019, karpova_jev@mail.ru

Raisa E. Belogurova, Research Associate, Research Center for Freshwater and Saltwater Hydrobiology (87 Marii Fortus St, Kherson, 273003, Russian Federation); Research Associate, A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS (2 Nakhimova Ave, Sevastopol, 299011, Russian Federation), PhD (Biol.), ORCID: 0000-0002-3101-7708, Scopus Author ID: 57221541105, ResearcherID: P-9056-2016, prishchepa.raisa@yandex.ru

Vladimir V. Gubanov, Leading Engineer, A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS (2 Nakhimova Ave, Sevastopol, 299011, Russian Federation), ORCID: 0000-0002-0077-2129, gubanov76@mail.ru

Gregoryi A. Prokopov, Research Associate, Research Center for Freshwater and Saltwater Hydrobiology (87 Marii Fortus St, Kherson, 273003, Russian Federation); Senior Lecturer, V. I. Vernadsky Crimean Federal University (4 Vernadskogo Ave, Simferopol, 295007, Russian Federation), ORCID: 0000-0000-0077-2129, Scopus Author ID: 22958408500, ResearcherID: JFB-3418-2023, prokopov@cfuv.ru

Irina I. Chesnokova, Senior Research Associate, Research Center for Freshwater and Saltwater Hydrobiology (87 Marii Fortus St, Kherson, 273003, Russian Federation); Senior Research Associate, A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS (2 Nakhimova Ave, Sevastopol, 299011, Russian Federation), PhD (Biology), ORCID: 0000-0002-7883-0755, Scopus Author ID: 57194774884, ResearcherID: X-2173-2019, mirenri@bk.ru

Sergey V. Kurshakov, Research Associate, Research Center for Freshwater and Saltwater Hydrobiology (87 Marii Fortus St, Kherson, 273003, Russian Federation); Research Associate, A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS (2 Nakhimova Ave, Sevastopol, 299011, Russian Federation), ORCID: 0000-0001-8129-5944, Scopus Author ID: 57200942626, ResearcherID: T-9557-2019, kurshackov@yandex.ru

Svetlana V. Statkevich, Senior Research Associate, Research Center for Freshwater and Saltwater Hydrobiology (87 Marii Fortus St, Kherson, 273003, Russian Federation); Senior Research Associate, A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS (2 Nakhimova Ave, Sevastopol, 299011, Russian Federation), PhD (Biol.), ORCID: 0000-0003-4108-459X, Scopus Author ID: 57190605963, ResearcherID: T-5972-2019

Dmitry G. Shavriev, Leading Engineer, A. O. Kovalevsky Institute of Biology of the Southern Seas of RAS (2 Nakhimova Ave, Sevastopol, 299011, Russian Federation), shavrievd@gmail.com

Sergey V. Ovechko, Director, Research Center for Freshwater and Saltwater Hydrobiology (87 Marii Fortus St, Kherson, 273003, Russian Federation), ORCID: 0009-0007-1050-9918, ResearcherID: JFJ-7762-2023, hgbs1@yandex.ru

Contribution of the authors:

Ludmila V. Malakhova – statement of the problem, preparation of water samples, sediments and hydrobionts for gas chromatographic analysis, determination of organochlorine pollutants, analysis and discussion of the obtained results, writing and design of the article

Evgeniia P. Karpova – management of expeditionary work in May 2023, participation in expeditionary sampling of components of the Salgir River ecosystem, determination of the species composition of ichthyofauna, discussion of results, editing of the article

Raisa E. Belogurova – management of expeditionary work in July 2023, sampling of ecosystem components of Salgir River and Biyuk-Karasu River, determination of the species composition of ichthyofauna, preparation and preparation of samples for analysis, discussion of results, editing of the article

Vladimir V. Gubanov – participation in expeditionary sampling of components of the Salgir River ecosystem and biological analysis of samples

Gregoryi A. Prokopov – planning and sampling of abiotic components and benthos in Salgir River and Biyuk-Karasu River, determination of the species composition of benthic organisms, discussion of the results, graphical presentation of the analysis results, editing the article

Irina I. Chesnokova – participation in expeditionary sampling of components of the Salgir River ecosystem, determination of the species composition of ichthyofauna, preparation and preparation of samples for analysis, discussion of results, editing of the article

Sergey V. Kurshakov – participation in expeditionary sampling of components of the Salgir River ecosystem and biological analysis of samples

Svetlana V. Statkevich – participation in expeditionary sampling of components of the Salgir River ecosystem and biological analysis of samples

Dmitry G. Shavriev – participation in expeditionary sampling of components of the Salgir River ecosystem and biological analysis of samples

Sergey V. Ovechko – statement of the problem, work planning, analysis of results, discussion and final editing of the article

All the authors have read and approved the final version of the manuscript.

Article text not included.

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