Document Detail

Sulfur isotope effects associated with oxidation of sulfide by O2 in aqueous solution.
MedLine Citation:
PMID:  11538336     Owner:  NASA     Status:  MEDLINE    
Normal sulfur isotope effects averaging epsilon = -5.2 +/- 1.4% (s.d.) were consistently observed for the oxidation of sulfide in aqueous solution. Reaction products were sulfate, thiosulfate and sulfite at pH 10.8-11 in distilled water; S0 was formed in two experiments with synthetic seawater at pH 8-9.5. Because the -5.2% normal isotope effect differs significantly from the previously measured +2% inverse effect associated with anaerobic oxidation of sulfide by photosynthetic bacteria, stable sulfur isotopic measurements are potentially useful for distinguishing aerobic vs. anaerobic sulfide oxidation in marine and freshwater sulfureta.
B Fry; W Ruf; H Gest; J M Hayes
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Isotope geoscience     Volume:  73     ISSN:  0167-6695     ISO Abbreviation:  Isot Geosci     Publication Date:  1988  
Date Detail:
Created Date:  1996-03-25     Completed Date:  1996-03-25     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  100972029     Medline TA:  Isot Geosci     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  205-10     Citation Subset:  S    
Department of Chemistry, Indiana University, Bloomington 47405, USA.
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MeSH Terms
Bacteria, Anaerobic / metabolism
Oxygen / metabolism*
Seawater / chemistry
Sulfates / analysis,  metabolism
Sulfides / chemistry*,  metabolism*
Sulfites / analysis,  metabolism
Sulfur / metabolism*
Sulfur Isotopes
Thiosulfates / analysis,  metabolism
Grant Support
PCM 84-04996/PC/NCI NIH HHS; PCM-79-10747/PC/NCI NIH HHS
Reg. No./Substance:
0/Sulfates; 0/Sulfides; 0/Sulfites; 0/Sulfur Isotopes; 0/Thiosulfates; 7704-34-9/Sulfur; 7782-44-7/Oxygen
J M Hayes / IN U, Bloomington, Dept Chem/Geol

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