13. Selected Case Studies

  1. John R. Dean

Published Online: 18 OCT 2013

DOI: 10.1002/9781118683422.ch13

Environmental Trace Analysis: Techniques and Applications

Environmental Trace Analysis: Techniques and Applications

How to Cite

Dean, J. R. (ed) (2013) Selected Case Studies, in Environmental Trace Analysis: Techniques and Applications, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9781118683422.ch13

Editor Information

  1. Department of Applied Sciences, Northumbria University, UK

Publication History

  1. Published Online: 18 OCT 2013
  2. Published Print: 29 NOV 2013

ISBN Information

Print ISBN: 9781119962700

Online ISBN: 9781118683422

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Keywords:

  • detailed quantitative risk assessment (DQRA);
  • metals;
  • oral bioaccessibility testing;
  • pressurised fluid extraction;
  • sequential extraction;
  • soils;
  • solid phase extraction

Summary

This chapter deals with some specific case studies in order to highlight the use of a range of extraction techniques in environmental analyses. Analysis of metals in soil can be done using acid digestion on a heating block or via a microwave oven. The chapter analyzes case studies on the single extraction process of metals from soils and sequential extraction of metals from soils. Rather than using single extraction methods to assess the bioavailability of metals in soils, a more sophisticated but different approach has also been applied based on a sequence of different extractants to try and investigate the underlying soil–metal chemical environment. This approach is based on the sequential extraction method that uses three distinct stages. Some of the other case studies deal with oral bioaccessibility testing; pressurised fluid extraction; solid phase extraction (SPE); headspace solid phase microextraction; and detailed quantitative risk assessment (DQRA).