Chapter 4. Isotope Effects, Mass Discrimination and Isotopic Fractionation

  1. Dr Wolfram Meier-Augenstein1,2

Published Online: 30 MAR 2010

DOI: 10.1002/9780470688762.ch4

Stable Isotope Forensics: An Introduction to the Forensic Application of Stable Isotope Analysis

Stable Isotope Forensics: An Introduction to the Forensic Application of Stable Isotope Analysis

How to Cite

Meier-Augenstein, W. (2010) Isotope Effects, Mass Discrimination and Isotopic Fractionation, in Stable Isotope Forensics: An Introduction to the Forensic Application of Stable Isotope Analysis, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9780470688762.ch4

Author Information

  1. 1

    Centre for Anatomy & Human Identification, University of Dundee, UK

  2. 2

    SCRI, Invergowrie, Dundee, UK

Publication History

  1. Published Online: 30 MAR 2010
  2. Published Print: 19 MAR 2010

ISBN Information

Print ISBN: 9780470517055

Online ISBN: 9780470688762

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Keywords:

  • isotope effects, mass discrimination and isotopic fractionation;
  • physical chemistry background - kinetic isotope effects and thermodynamic isotope effects;
  • infrared spectroscopy - relation between mass of chemical two-atom system, bond length and bond strength;
  • fractionation factor α and enrichment factor ε;
  • kinetic or primary isotope effect - bond broken or formed in rate-determining step of reaction;
  • isotopic fractionation in Rayleigh processes - change in isotopic composition of a reservoir;
  • Equilibrium isotopic fractionation - isotopic exchange reactions between two different phases

Summary

This chapter contains sections titled:

  • Physical Chemistry Background

  • Fractionation Factor α and Enrichment Factor ε

  • Isotopic Fractionation in Rayleigh Processes

  • Isotopic Fractionation Summary