Hydrocarbons and their derivatives in the mineral waters of the East Ussursky and Medvezhye sites of the Shmakovka resort

The paper presents the initial data on the composition and relative contents of hydrocarbons and their derivatives of medium volatility in mineral water with high CO2 content from two sites at the Shmakovka field wells located in Primorsky Territory. The total organic carbon concentration and average volatile organic matter content are considered in the instrument units of measurement. The author used a field unit for solid phase extraction. The investigated waters extracts were obtained directly at the sampling site. By capillary gas chromatography-mass spectrometry, it was found a variety of organic components constituting 15 homological series. It was stated the dominance of aliphatic hydrocarbons (n-alkanes, isoalkanes, alkenes, etc.) in the studied mineral waters. The other organic substances identified in the extract of the Shmakovka deposit carbonic acid water are oxygen- and sulphur-containing compounds and aromatic (including heteroaromatic) HCs. The paper describes the molecular weight distribution of limiting hydrocarbons and calculated geochemical odd indices. For These organic compounds are assumed to have either a bacterial origin, or the result of organic residues of microbiological genesis transformation by carbon dioxide. The detected phthalic acid esters are not of instrumental origin (during chromatographic analysis), they are dissolved in mineral water. It is also assumed the anthropogenic influence on the Vostochno-Ussursky site. The conducted study of the average volatility organic components in carbonic mineral water of the Shmakovka deposit is important for both regional ecology and balneology. The obtained database on organic components in mineral waters of the well-known Far Eastern health resort may be used to reveal which of the compounds are beneficial or harmful to the human body. It can also help to detect the components indicating the anthropogenic pollution.