Isotope fractionation information

Isotope fractionation describes fractionation processes that affect the relative abundance of isotopes, phenomena which are taken advantage of in isotope...

expression stable-isotope ratio is preferably used to refer to isotopes whose relative abundances are affected by isotope fractionation in nature. This...

T in K Different researchers have also used other fractionation factors like dolomite fractionation factor. While measuring samples of unknown composition...

Fractionation is a separation process in which a certain quantity of a mixture (of gasses, solids, liquids, enzymes, or isotopes, or a suspension) is divided...

natural radioactivity. For most stable isotopes, the magnitude of fractionation from kinetic and equilibrium fractionation is very small; for this reason, enrichments...

and conditions that favor this fractionation. The table below summarizes the reported fractionations of oxygen isotopes from MSO in different organisms...

particular to describe isotopic enrichment or depletion as material moves between reservoirs in an equilibrium process. Rayleigh fractionation holds particular...

The isotopic fractionation of a natural process can be calculated from measured isotope abundances. The calculated value is called a "fractionation factor...

as polar ice or calcite in ocean core samples, measured with the isotope fractionation. The ratio is linked to ancient ocean temperature which in turn...

3-phosphoglyceraldehyde. Isotope fractionation due to Rubisco (form I) carboxylation alone is predicted to be a 28‰ depletion, on average. However, fractionation values...

Equilibrium isotope fractionation is the partial separation of isotopes between two or more substances in chemical equilibrium. Equilibrium fractionation is strongest...

49 (indium). A 2021 study has shown at high ionic strengths, Cd isotope fractionation mainly depends on its complexation with carboxylic sites. At low...

Kinetic fractionation is an isotopic fractionation process that separates stable isotopes from each other by their mass during unidirectional processes...

began, can generally be accounted for by mass fractionation (see the article on mass-independent fractionation) plus a limited number of nuclear decay and...

Martin J.; Jolis, Ester M.; Freda, Carmela (2016-08-04). "Boron isotope fractionation in magma via crustal carbonate dissolution". Scientific Reports...

S; Canfield, Donald E; Rethmeier, J̈org (August 1998). "Sulfur isotope fractionation during bacterial reduction and disproportionation of thiosulfate...

partial separation of isotopes between different pools is termed isotope fractionation, and is mathematically described by fractionation factors α or ε (which...

oil is also affected by the isotope fractionation from phase-change. However, the behavior of oil gas-liquid fractionation differs from water as the vapor...

carbonates shows little isotopic fractionation, while carbon in materials originated by photosynthesis is depleted of the heavier isotopes. In addition, there...

underwent hydrodynamic escape, which accounts for the noble gas isotope fractionation present in their atmospheres. Irwin, Patrick G. J. (2006). Giant...

be re-extracted. Calcium isotope fractionation during mineral formation has led to several applications of calcium isotopes. In particular, the 1997 observation...

minimal fractionation in evaporitic sulfate in association with magmatically derived sulfides can be seen in the rock record. This fractionation shows possible...

isotope effect Reaction mechanism Transient kinetic isotope fractionation Urey–Bigeleisen–Mayer equation Westaway KC (2006). "Using kinetic isotope effects...

therefore isotopic effects cannot be described with the classical equilibrium fractionation equations or with steady-state kinetic fractionation equations...

adulteration. The combined use of isotope ratio mass spectrometry and SNIF-NMR (Site-Specific Natural Isotope Fractionation-Nuclear Magnetic Resonance) allows...