isotope exchange

isotope exchange

[′ī·sə‚tōp iks¦chānj]
(nucleonics)
Exchange of places by two atoms, but different isotopes, of the same element in two different molecules, or in different locations of the same molecule.
The transfer of isotopically tagged atoms from one chemical form or valence state to another, without net chemical reaction.
References in periodicals archive ?
An example of use is to analyze the size and composition of viral complexes between proteins and nucleic acids that can have masses in the order of megadalton and the exact determination of isotopically resolved masses in a complex mixture of peptides after isotope exchange.
Clifton Nonstomatal Uptake Controls Inter-annual Lamont Doherty Earth Variability in Ozone Dry Deposition at a Observatory Northern Mid-latitude Broadleaf Deciduous Forest Poster Presenter Winner Kyle Stropes In-situ Measurements of Isotope Exchange Kansas State University using Tunable Diode Laser Spectroscopy in a Tail-Grass Prairie Ecosystem Oral Honorable Mentions Zhongjie Yu A Novel Dynamic Flux Chamber System for University of Pittsburgh Collection of Soil-Emitted Nitric Oxide (NO) for Natural Abundance Stable N Isotope Analysis Manuel Helbig Impact of Permafrost Thaw on Methane Universite de Montreal Fluxes across a Heterogeneous Boreal Landscape Poster Honorable Mentions Benjamin A.
Specifically, collected tritiated water is contacted with a catalyst that makes hydrogen isotope exchange between protium gas (normal hydrogen gas) and tritiated moisture possible, before being reduced in volume and enriched.
Moreover, tritium-vapor hydrogen isotope exchange efficiency is approximately 1.
When ozone reacts with carbon dioxide in the atmosphere, it transfers its isotopic weirdness to the new molecule," said Shaheen, who investigated this process of oxygen isotope exchange as a graduate student at the University of Heidelberg in Germany.
heavy isotope] are the measured intensities of the lighter and heavier isotope peaks (counts/s) after the isotope exchange.
Deriving initial velocity and isotope exchange rate equations
Isotope exchange methods for elucidating enzymatic catalysis
Derivation of Initial Velocity and Isotope Exchange Rate Equation (Huang)
Oxygen Diffusion in Bi2M4O9 (M = AI, Ga, Fe) Systems and the Effect of Sr Doping in Bi2-2xSr2xM4O9-x Studied by Isotope Exchange Experiments and IR Absorption (T.
The central part of this project, and this is a new concept, is to investigate the proton conducting process by Secondary Ion Mass Spectrometry (SIMS) after 2H/1H isotope exchange.