Oil and petroleum products are among the most common pollutants in the marine environment. One of the main difficulties in interpreting oil pollution data for the seas, especially in cases of low concentrations, is the natural biogenic origin of many hydrocarbons which are typical for the chemical composition of oil. The aim of the work was to determine the total content, distribution and main sources of hydrocarbons input in the water of the river–sea mixing zone (the Chernaya River) using gas chromatographic methods. Based on the analysis of diagnostic ratios, as well as the principal component analysis it has been established that the main source of hydrocarbon input to the estuarine zone of the Chernaya River can be considered as the autochthonous production, and the input of oil and petroleum products is the third most important source.

石油和石油产品是海洋环境中最常见的污染物之一。解释海洋石油污染数据的主要困难之一，特别是在低浓度的情况下，是许多碳氢化合物的天然生物来源，这些碳氢化合物是石油化学成分的典型代表。这项工作的目的是使用气相色谱法确定河-海混合区（切尔纳亚河）水中输入的碳氢化合物的总含量、分布和主要来源。通过诊断比分析和主成分分析，确定切尔纳亚河河口带油气输入的主要来源为本土生产，石油和石油产品的输入是第三个最重要的来源。