First-principles study of sulfur isotope fractionation in sulfides

2014 ◽  
Vol 26 (6) ◽  
pp. 717-725 ◽  
Author(s):  
Shanqi Liu ◽  
Yongbing Li ◽  
Huiquan Tian ◽  
Junli Yang ◽  
Jianming Liu ◽  
...  
Keyword(s):  
First Principles ◽  
Isotope Fractionation ◽  
Sulfur Isotope ◽  
First Principles Study ◽  
Sulfur Isotope Fractionation

Equilibrium Cu isotope fractionation in copper minerals: a first-principles study

2021 ◽  
Vol 564 ◽  
pp. 120060
Author(s):  
Shanqi Liu ◽  
Yongbing Li ◽  
Jie Liu ◽  
Zhiming Yang ◽  
Jianming Liu ◽  
...  
Keyword(s):  
First Principles ◽  
Isotope Fractionation ◽  
First Principles Study ◽  
Cu Isotope

Stable isotope fractionation by Clostridium pasteurianum. 5. Effect of SeO42− on the physiology and associated sulfur isotope fractionation during SO32− and SO42− reductions

1982 ◽  
Vol 28 (3) ◽  
pp. 325-333 ◽  
Author(s):  
G. I. Harrison ◽  
E. J. Laishley ◽  
H. R. Krouse
Keyword(s):  
Stationary Phase ◽  
Isotope Fractionation ◽  
Sulfur Isotope ◽  
Reductase Activity ◽  
Clostridium Pasteurianum ◽  
Elemental Selenium ◽  
Whole Cells ◽  
Stable Isotope Fractionation ◽  
Sulfur Isotope Fractionation ◽  
Inverse Isotope Effect

The addition of 1 mM SeO42− significantly affected the physiology and metabolism of Clostridium pasteurianum growing on SO42− in the following ways: (1) the generation time was increased, essentially producing a biphasic growth curve, (2) cells became elongated and chains formed, (3) no H2S was liberated during the stationary phase, (4) assimilatory SO32− reductase activity was decreased, (5) ferredoxin levels decreased by a factor of 4. The effects of 1 mM SeO42− on Clostridium pasteurianum growing on SO32− were comparatively minor.H2S evolution in the stationary phase decreased by a factor of 2 and the δ34S maximum in the inverse isotope effect pattern occurred at a slightly lower percent H2S evolution. The deleterious effects of SeO42− addition were less pronounced than those associated with SeO32− addition. SeO32− but not SeO42− was reduced to elemental selenium by both whole cells and crude extracts.

Sulfur Isotope Fractionation by Sulfate-Reducing Microbes Can Reflect Past Physiology

2018 ◽  
Vol 52 (7) ◽  
pp. 4013-4022 ◽  
Author(s):  
André Pellerin ◽  
Christine B. Wenk ◽  
Itay Halevy ◽  
Boswell A. Wing
Keyword(s):  
Isotope Fractionation ◽  
Sulfur Isotope ◽  
Sulfate Reducing ◽  
Sulfur Isotope Fractionation
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