Aliphatic hydrocarbons (HCs) were studied in water and bottom sediments sampled during cruises 67th and 68th (August–September 2016 and July–August 2017, respectively) of the R/V Akademik Mstislav Keldysh in the Barents Sea to determine the lateral and interannual variability of their concentrations and composition. It has been established that the HC distribution in water was mainly determined by natural factors and depended on the hydrological peculiarites in different areas of the sea. From autumn 2016 to summer 2017, hydrocarbon concentrations slightly increased (on average, from 3 to 5 µg/L), which was related to a change in the biochemical composition of organic matter likely owing to the decrease of ice area. The content of HCs decreased mainly with the depth. An exception was observed in the area of troughs and deposits, where nepheloid bottom layers demonstrated an increase of HC concentration in suspended matter and in the surface layer of bottom sediments, whereas sedimentary sequence showed no correlation between HC distribution and organic carbon.

中文翻译：

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冰盖变化期间巴伦支海水和海底沉积物中的碳氢化合物

在 67 日和 68 日（分别为 2016 年 8 月至 2016 年 9 月和 2017 年 7 月至 8 月）在巴伦支海的 R/V Akademik Mstislav Keldysh 航行期间采样的水和底部沉积物中的脂肪烃 (HC) 被研究，以确定横向和年际变化它们的浓度和成分。已经确定水中HC的分布主要由自然因素决定，并取决于海洋不同区域的水文特征。从 2016 年秋季到 2017 年夏季，碳氢化合物浓度略有增加（平均从 3 到 5 µg/L），这与冰面积减少可能导致有机物生化成分发生变化有关。HCs 的含量主要随着深度的增加而减少。在海槽和沉积物区域观察到一个例外，