Sulfur Isotopes: Abundance, Geochemistry, and Microbial Applications

Sulfur, a ubiquitous element in nature, exists in four stable isotopes: 32S, 33S, 34S, and 36S. These isotopes have proven invaluable in various fields, particularly geochemistry and microbiology.

Here are some key research articles exploring the diverse applications of sulfur isotopes:

1. Farquhar, J., et al. (2000). 'Stable isotopic variations in sulfur and their geochemical significance.' Reviews in Mineralogy and Geochemistry 43(1): 601-703.
2. Ohmoto, H. and R. Buick (1997). 'The evolution of the Earth's biogeochemical sulfur cycle.' American Journal of Science 297(4): 368-407.
3. Habicht, K. S. and B. Thamdrup (2006). 'Sulfur isotope fractionation during bacterial sulfate reduction in organic-rich sediments.' Geochimica et Cosmochimica Acta 70(5): 918-932.
4. Sim, M. S. and J. A. J. Dijkstra (2014). 'Sulfur isotopes in the study of microbial metabolism and ecology.' Current Opinion in Microbiology 18: 41-47.