On the problem of a turbid layer occurring near the upper boundary of the hydrogen sulphide zone in the Black Sea
This paper considers the possibility of aldehyde reduction by Black Sea hydrogen sulphide accompanied by the formation of nitrogen-containing organic substances The fine structure of nitrates and ammonium profiles close to the boundary of the O2/H2S zone is studied. Using data collected during Cruise 18 of the R/VProfessor Kolesnikov, it is shown that the largest ammonium concentration gradient is centred 20 m below the maximum of nitrate concentration. It has been deduced that an appreciable part of the so-called chemosynthesis production may be a result of the non-biotic synthesis with involvement of hydrogen sulphide.
KeywordsAmmonium Nitrate Climate Change Aldehyde Fine Structure
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