Isotope fractionation and isotope decoupling during anammox and denitrification in marine sediments

Isotope Effects, Isotope Separation and Isotope Fractionation

Hydrogen isotope fractionation during H

Hydrogen metabolism was studied in the anaerobic bacterium, Sporomusa sp. strain DMG 58, by measuring natural abundance levels of deuterium in H 2 , H 2 O, and individual fatty acids during acetogenic growth on H 2 / CO 2 . Four cultures were grown, each in medium with a distinct hydrogen-isotopic composition ( δ D-H 2 O). The δ D value of H 2 was quantified in the residual gas exiting the grow...

Denitrification and Anammox in Tropical Aquaculture Settlement Ponds: An Isotope Tracer Approach for Evaluating N2 Production

Settlement ponds are used to treat aquaculture discharge water by removing nutrients through physical (settling) and biological (microbial transformation) processes. Nutrient removal through settling has been quantified, however, the occurrence of, and potential for microbial nitrogen (N) removal is largely unknown in these systems. Therefore, isotope tracer techniques were used to measure pote...

Experimental Evidence for Isotope Fractionation during Planetary

DIFFERENTIATION. A. Shahar K. Ziegler, E. D. Young, A. Ricolleau, C. A. Macris, E. A. Schauble and Y. Fei, Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Rd. NW, Washington D.C. 20015, [email protected], Institute of Geophysics and Space Physics, UCLA, 603 Charles Young Drive East, Los Angeles, CA, 90095, Department of Earth and Space Sciences, UCLA, 595 Charles You...

Boron isotope fractionation during brucite deposition

Boron isotope fractionation during brucite deposition from artificial seawater J. Xiao, Y. K. Xiao, C. Q. Liu, and Z. D. Jin State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710075, China Qinghai Institute of Salk Lakes, Chinese Academy of Sciences, Xining, Qinghai, 810008, China State Key Laboratory of Environmental Geoch...