Oxygen-containing organic compounds in thermal waters of the Mutnovsky and Paratunsky geothermal areas and сaldera Uzon, Kamchatka

The paper represents the study of oxygen-containing compounds composition in sterile steam-water mixture from wells and in high-temperature springs of the Mutnovskaya, Paratunskaya and Uzonskaya hydrothermal systems. Using the method of gas chromatography-mass spectrometry, the author identifi ed 42 oxygen-containing compounds belonging to 7 homologous series. The organic matter relative content is 25%. Alcohols, esters, carboxylic acids, aldehydes and ketones of biogenic origin are widely distributed in the above-mentioned hydrothermal systems. Compositional features of carboxylic acids and alcohols indicate their biogenic genesis, as well. The author found some technogenic compounds only in boiling water of the Dachny thermal fi eld, in the Mutnovsky area.