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Use of the Term "Recovery" and "Apparent Recovery" in Analytical Procedures (IUPAC Recommendations 2002)

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Chemistry International -- Newsmagazine for IUPAC
From the journal Chemistry International -- Newsmagazine for IUPAC Volume 25 Issue 3

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Making an imPACt|Recent IUPAC technical reports and recommendations that affect the many fields of pure and applied chemistry.

See also www.iupac.org/publications/pac 

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Use of the Term "Recovery" and "Apparent Recovery" in Analytical Procedures (IUPAC Recommendations 2002)

by D. T. Burns, K. Danzer, and A. Townshend

Pure and Applied Chemistry ,

Vol. 74, No. 11, pp. 2201—2205 (2002)

For linear calibration graphs c(test) is independent of the slopes a1 or a2. The absolute values of R1 or R2 do not affect the value of c(test) provided that R1e1l and R2e2l are independent of C.

The chemical community has used the term recovery to deal with two quite different experimental configurations. The terms recovery and apparent recovery are recommended to avoid confusion caused by the use of the term recovery to cover two distinct situations. These situations deal with: (a) the yield of a preconcentration or extraction stage of an analytical process (where recovery is recommended) and (b) the quantity observed value/reference value, obtained using an analytical procedure that involves a calibration graph (where apparent recovery is recommended).

www.iupac.org/publications/pac/2002/7411/7411x2201.html

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Page last modified 29 April 2003.

Copyright © 2002-2003 International Union of Pure and Applied Chemistry.

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Published Online: 2009-09-01
Published in Print: 2003-05

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https://doi.org/10.1515/ci.2003.25.3.18b

Articles in the same Issue

  1. From the Editor
  2. Contents
  3. A Challenge to the World’s Scientists
  4. Discover Chemistry in Europe
  5. Philosophy of Chemistry
  6. Countdown to Ottawa
  7. David Shaw Appointed to J. Phys. Chem. Ref. Data Editorial Board
  8. Data for Science and Technology
  9. Physical and Engineering Science in Health Care
  10. Boletin Electronico Latinoamericano
  11. Atmospheric Deposition and Its Impact on Ecosystems
  12. 2004 ICSU Grants Program–IUPAC Applications
  13. Interdisciplinary Harmonized Approach to Metrological Traceability of Chemical Measurement Results
  14. Establishment of a System to Implement the Global Sharing of Chemical Education Reading Material with the Aid of Bi-Directional Machine Translation
  15. Toxicology Postgraduate Research in Developing Countries
  16. Women in Physics and Physical Science Network in Africa
  17. Foundation of an African Institute for Mathematical Sciences
  18. Solubility Data of Compounds Relevant to Human Health
  19. Solubility of Substances Related to Urolithiasis
  20. Solubility of Hydroxybenzoic Acids and Hydroxybenzoates
  21. Solubility of Haloganated Aromatic Hydrocarbons
  22. Recommended Values of the Viscosity of Molten Iron and Aluminum
  23. Postgraduate Course in Polymer Science
  24. Impact of Transgenic Crops on the Use of Agrochemicals and the Environment
  25. Provisional Recommendations
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  28. Impact of Scientific Developments on the Chemical Weapons Convention (IUPAC Technical Report)
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  30. Critical Evaluation of the Chemical Properties of the Transactinide Elements
  31. Special Topic Articles Featuring the 2002 Winners of the IUPAC Prize for Young Chemists
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  36. Applications of Multiple Intelligences Theory to Chemistry Teaching and Learning
  37. Solid State Chemistry
  38. Photochemistry
  39. The Mission and Challenges of Polymer Science and Technology
  40. Polymer Characterization and Advanced Materials
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  43. Biological Inorganic Chemistry
  44. Molecular Characterization of Polymers
  45. Therapeutic Drug Monitoring and Clinical Toxicology
  46. Organic Chemistry
  47. Biodiversity and Natural Products
  48. Mycotoxins and Phycotoxins
  49. Polymers and Organic Chemistry
  50. Chemistry and Biological Chemistry of Vanadium
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