Organic carbon in surface sediments of Chaunskaya Bay (East Siberian Sea): results of pyrolytic analysis using the Rock-Eval method
Relevance. Dictated by the need to assess functioning of the biogeochemical regime of the Arctic region by studying geochemical properties of organic matter of bottom sediments on the example of the Chaunskaya Bay (East-Siberian Sea). Aim. To study the spatial variability of geochemical parameters...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | Russian |
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Tomsk Polytechnic University
2024-01-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | https://izvestiya.tpu.ru/archive/article/view/4415 |
| _version_ | 1797335607483039744 |
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| author | Natalina A. Poltavskaya Elena V. Gershelis Aleksandr N. Charkin Elena I. Yaroshchuk Natalya V. Guseva Igor P. Semiletov |
| author_facet | Natalina A. Poltavskaya Elena V. Gershelis Aleksandr N. Charkin Elena I. Yaroshchuk Natalya V. Guseva Igor P. Semiletov |
| author_sort | Natalina A. Poltavskaya |
| collection | DOAJ |
| description |
Relevance. Dictated by the need to assess functioning of the biogeochemical regime of the Arctic region by studying geochemical properties of organic matter of bottom sediments on the example of the Chaunskaya Bay (East-Siberian Sea). Aim. To study the spatial variability of geochemical parameters of organic matter of bottom sediments of the Chaunskaya Bay using the Rock-Eval method, as well as to identify a possible relationship between the parameter TOC and the pelite fraction. Objects. Samples of bottom sediments of the Chaunskaya Bay (East Siberian Sea). Sampling took place in stages from three horizons (upper 0–2 cm, intermediate 2–5 cm, lower 5–10 cm) during a comprehensive scientific expedition to the R/V "Academician Oparin" in September–October 2020. Methods. Granulometric composition of bottom sediments was determined using the Analysette 22 NanoTec particle analyzer (Fritsch, Germany). The analysis of hydrocarbon compounds of organic matter was performed using pyrolytic analysis on the device (Rock Eval 6 Turbo of Vinci Technologies, France). Results. The results of pyrolytic analysis considered by the authors have shown that such factors as the primary productivity of the waters of the studied water area and the processes of erosion of the coastal zone play a decisive role in the formation of the composition of the TOC in bottom sediments of the Chaunskaya Bay. We also do not exclude the contribution of river runoff to the composition of the TOC in bottom sediments; however, we consider it small due to the insignificant inflow of river sediments into the waters of the studied area. The pyrolytic data obtained by us indicate that both the marine component (primary productivity) and the terrigenous component (erosion of the coastal complex) are present in the composition of the TOC in bottom sediments of the studied area.
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| first_indexed | 2024-03-08T08:40:45Z |
| format | Article |
| id | doaj.art-d13ab05f3f3146479aca03718656567d |
| institution | Directory Open Access Journal |
| issn | 2500-1019 2413-1830 |
| language | Russian |
| last_indexed | 2024-03-08T08:40:45Z |
| publishDate | 2024-01-01 |
| publisher | Tomsk Polytechnic University |
| record_format | Article |
| series | Известия Томского политехнического университета: Инжиниринг георесурсов |
| spelling | doaj.art-d13ab05f3f3146479aca03718656567d2024-02-01T23:06:47ZrusTomsk Polytechnic UniversityИзвестия Томского политехнического университета: Инжиниринг георесурсов2500-10192413-18302024-01-01335110.18799/24131830/2024/1/4415Organic carbon in surface sediments of Chaunskaya Bay (East Siberian Sea): results of pyrolytic analysis using the Rock-Eval methodNatalina A. PoltavskayaElena V. Gershelis0Aleksandr N. Charkin1Elena I. Yaroshchuk2Natalya V. Guseva3Igor P. Semiletov4National Research Tomsk Polytechnic University Pacific Oceanological InstitutePacific Oceanological InstituteNational Research Tomsk Polytechnic University National Research Tomsk Polytechnic University Relevance. Dictated by the need to assess functioning of the biogeochemical regime of the Arctic region by studying geochemical properties of organic matter of bottom sediments on the example of the Chaunskaya Bay (East-Siberian Sea). Aim. To study the spatial variability of geochemical parameters of organic matter of bottom sediments of the Chaunskaya Bay using the Rock-Eval method, as well as to identify a possible relationship between the parameter TOC and the pelite fraction. Objects. Samples of bottom sediments of the Chaunskaya Bay (East Siberian Sea). Sampling took place in stages from three horizons (upper 0–2 cm, intermediate 2–5 cm, lower 5–10 cm) during a comprehensive scientific expedition to the R/V "Academician Oparin" in September–October 2020. Methods. Granulometric composition of bottom sediments was determined using the Analysette 22 NanoTec particle analyzer (Fritsch, Germany). The analysis of hydrocarbon compounds of organic matter was performed using pyrolytic analysis on the device (Rock Eval 6 Turbo of Vinci Technologies, France). Results. The results of pyrolytic analysis considered by the authors have shown that such factors as the primary productivity of the waters of the studied water area and the processes of erosion of the coastal zone play a decisive role in the formation of the composition of the TOC in bottom sediments of the Chaunskaya Bay. We also do not exclude the contribution of river runoff to the composition of the TOC in bottom sediments; however, we consider it small due to the insignificant inflow of river sediments into the waters of the studied area. The pyrolytic data obtained by us indicate that both the marine component (primary productivity) and the terrigenous component (erosion of the coastal complex) are present in the composition of the TOC in bottom sediments of the studied area. https://izvestiya.tpu.ru/archive/article/view/4415pyrolysisorganic mattergranulometric compositionbottom sedimentsEast Siberian SeaArctic |
| spellingShingle | Natalina A. Poltavskaya Elena V. Gershelis Aleksandr N. Charkin Elena I. Yaroshchuk Natalya V. Guseva Igor P. Semiletov Organic carbon in surface sediments of Chaunskaya Bay (East Siberian Sea): results of pyrolytic analysis using the Rock-Eval method Известия Томского политехнического университета: Инжиниринг георесурсов pyrolysis organic matter granulometric composition bottom sediments East Siberian Sea Arctic |
| title | Organic carbon in surface sediments of Chaunskaya Bay (East Siberian Sea): results of pyrolytic analysis using the Rock-Eval method |
| title_full | Organic carbon in surface sediments of Chaunskaya Bay (East Siberian Sea): results of pyrolytic analysis using the Rock-Eval method |
| title_fullStr | Organic carbon in surface sediments of Chaunskaya Bay (East Siberian Sea): results of pyrolytic analysis using the Rock-Eval method |
| title_full_unstemmed | Organic carbon in surface sediments of Chaunskaya Bay (East Siberian Sea): results of pyrolytic analysis using the Rock-Eval method |
| title_short | Organic carbon in surface sediments of Chaunskaya Bay (East Siberian Sea): results of pyrolytic analysis using the Rock-Eval method |
| title_sort | organic carbon in surface sediments of chaunskaya bay east siberian sea results of pyrolytic analysis using the rock eval method |
| topic | pyrolysis organic matter granulometric composition bottom sediments East Siberian Sea Arctic |
| url | https://izvestiya.tpu.ru/archive/article/view/4415 |
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