Formation of polysulfides in an oxygen rich freshwater lake and their role in the production of volatile sulfur compounds in aquatic systems

J. Gun, A. Goifman, I. Shkrob, A. Kamyshny, B. Ginzburg, O. Hadas, I. Dor, A. D. Modestov, O. Lev*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

We present the first observations on the occurrence of inorganic polysulfides in an oxygen rich aquatic system. Inorganic polysulfides were found both in the hypolimnion and the epilimnion of a freshwater lake - Lake Kinneret. The presence of these compounds in oxic systems resolves the enigma concerning the mechanism of formation of dimethyl disulfide, dimethyltrisulfide, and dimethyltetrasulfide in oxygen rich aquatic systems and marine water. The abundance of low molecular weight organic and inorganic polysulfides relative to the a priori postulated dominance of the pentasulfide family is explained by the low level of polysulfides in oxygen-rich aquatic systems. Thermodynamic calculations show that for trace levels of reduced sulfur compounds, dimethyl disulfide becomes the dominant polysulfide form.

Original languageAmerican English
Pages (from-to)4741-4746
Number of pages6
JournalEnvironmental Science and Technology
Volume34
Issue number22
DOIs
StatePublished - 15 Nov 2000

Fingerprint

Dive into the research topics of 'Formation of polysulfides in an oxygen rich freshwater lake and their role in the production of volatile sulfur compounds in aquatic systems'. Together they form a unique fingerprint.

Cite this