Scholarlink

Abstract <p>The concentrations and composition of hydrocarbons (aliphatic (AHCs) and polycyclic aromatic hydrocarbons (PAHs)) were determined using molecular markers in Holocene sediments of the Norwegian–Greenland Basin and Barents Sea (cruise 84 of the R/V <i>Akademik Mstislav Keldysh</i>, 2021). A wide range of concentrations in surface bottom sediments has been established: C<sub>org</sub> (0.25–2.71%), AHCs (7–182 μg/g), and PAHs (0–1918 ng/g). The hydrocarbon distribution is determined mainly by the processes occurring in the sedimentary strata (changes in Eh and fluid flows), and to a lesser extent by the lithotype of sediments. At the same time, the formation of autochthonous homologues is observed in the composition of alkanes, and the formation of naphthalenes in the composition of PAHs.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Origin of Hydrocarbons in Holocene Sediments of the Norwegian–Greenland Basin and Barents Sea

  • 期刊论文

  • 发表日期：

    2025年2月1日

查看全文
  • I. A. Nemirovskaya,
  • A. V. Medvedeva

摘要

Abstract

The concentrations and composition of hydrocarbons (aliphatic (AHCs) and polycyclic aromatic hydrocarbons (PAHs)) were determined using molecular markers in Holocene sediments of the Norwegian–Greenland Basin and Barents Sea (cruise 84 of the R/V Akademik Mstislav Keldysh, 2021). A wide range of concentrations in surface bottom sediments has been established: Corg (0.25–2.71%), AHCs (7–182 μg/g), and PAHs (0–1918 ng/g). The hydrocarbon distribution is determined mainly by the processes occurring in the sedimentary strata (changes in Eh and fluid flows), and to a lesser extent by the lithotype of sediments. At the same time, the formation of autochthonous homologues is observed in the composition of alkanes, and the formation of naphthalenes in the composition of PAHs.