Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Oxygen isotopes fractionation during

Analysis of oxygen isotope fractionation during peroxidase turnover is perhaps the most direct way to examine the mechanism of O—O bond cleavage. In a recent study of horseradish peroxidase (HRP),78 the isotope fractionation of H2O2 was analyzed upon oxidation of the cosubstrate 2-methoxyphenol. The reaction of the Fenl-HRP with H202 was characterized by a significant 180 KIE of 1.0127 0.0008. [Pg.450]

Lehmann, M.F., Reichert, P., Bemasconi, S.M., Barbieri, A., and McKenzie, J.A. (2003) Modeling nitrogen and oxygen isotope fractionation during denitrification in a lacustrine redox-transition zone. Geochim. Cosmochim. Acta 67, 2529-2542. [Pg.616]

Hydrogen and oxygen isotopes fractionate during evaporation. This affects the isotopic... [Pg.2652]

Matthews A. and Katz A., 1977, Oxygen isotope fractionation during the dolomitisation of calcium carbonate. Geochim. Cosmochim. Acta, 41, 1431-1438. [Pg.331]

Shih C-C, ME Davey, J Zhou, JM Tiedje, CS Criddle (1996) Effects of phenol feeding pattern on microbial community structure and cometabolism of trichloroethylene. Appl Environ Microbiol 62 2953-2960. Somsamak P, HH Richnow, MM Haggblom (2005) Carbon isotope fractionation during anaerobic biotransformation of methyl ferf-butyl ether and ferf-amyl methyl ether. Environ Sci Technol 39 103-109. Somsamak P, RM Cowan, MM Haggblom (2001) Anaerobic biotransformation of fuel oxygenates under sulfate-reducing conditions. EEMS Microbiol Ecol 37 259-264. [Pg.690]

The assignment of the earth/moon system to one precursor nebular reservoir, and meteorites to a second, while still logically possible, was shown experimentally to be unnecessary by Thiemens and coworkers (reading list). In the early 1980s these workers studied isotope fractionation during the synthesis of ozone from molecular oxygen in an electric discharge operated at low pressure. The product ozone was... [Pg.446]

Baker JA, Macpherson CG, Menzies MA, Thirlwall ME, Al-Kadasi M, Mattey DP (2000) Resolving cmstal and mantle contributions to continental flood volcanism, Yemen consfrainfs from mineral oxygen isofope data. J Petrol 41 1805-1820 Bald N, BuUen TD, Witte-Lien K, Shanks WC, Motelica M, Mandernack KW (2006) Iron isotope fractionation during microbiaUy simulated Fe(II) oxidation and Fe(III) precipitation. Geochim Cosmochim Acta 70 622-639... [Pg.230]

Bottcher ME, Thamdrup B, Vennemann TW (2001) Oxygen and sulfur isotope fractionation during anaerobic bacterial disproportionation of elemental sulfur. Geochim Cosmochim Acta 65 ... [Pg.233]

Granger, J., Sigman, D.M., Needoba, J.A., and Harrison, P.J. (2004) Coupled nitrogen and oxygen isotopic fractionation of nitrate during assimilation by cultures of marine phytoplankton. Limnol. Oceanogr. 49, 1763-1773. [Pg.588]

See other pages where Oxygen isotopes fractionation during is mentioned: [Pg.272]    [Pg.247]    [Pg.272]    [Pg.247]    [Pg.162]    [Pg.332]    [Pg.48]    [Pg.93]    [Pg.442]    [Pg.253]    [Pg.292]    [Pg.148]    [Pg.181]    [Pg.205]    [Pg.206]    [Pg.226]    [Pg.231]    [Pg.234]    [Pg.235]    [Pg.247]    [Pg.251]    [Pg.254]    [Pg.255]    [Pg.279]    [Pg.307]    [Pg.101]    [Pg.426]    [Pg.454]    [Pg.131]    [Pg.591]    [Pg.288]    [Pg.1569]    [Pg.2120]    [Pg.235]    [Pg.605]    [Pg.271]    [Pg.15]    [Pg.110]    [Pg.122]    [Pg.127]    [Pg.34]    [Pg.35]    [Pg.61]   


SEARCH



Fractionation isotope

Isotope isotopic fractionation

Isotopic fractionation

Isotopic oxygen

© 2024 chempedia.info