The features of the physical and colloidal-chemical state of liquid hydrocarbons when they enter the hydrosphere were determined. It is established that petroleum hydrocarbons, being exposed to temporal and biochemical degradation, cause low reliability of their identification. The list of metals and their organic compounds, necessary and sufficient for qualitative and quantitative detection for the identification of oils and petroleum products has been defined. The methods of analysis, providing identification of petroleum hydrocarbons, both in their circulation and in migration into the environment, are proposed
temporal and biochemical degradation, identification, petroleum hydrocarbons, hydrosphere pollution, organometallic compounds, conservative components
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