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Fresenius' Journal of Analytical Chemistry

, Volume 352, Issue 1–2, pp 40–42 | Cite as

Preparation and testing for homogeneity of spiked strawberry and cabbage candidate reference materials

  • Veli Hietaniemi
  • Auli Kostamo
  • Jorma Kumpulainen
  • Juha-Matti Pihlava
Global Needs For RM

Abstract

Strawberry and cabbage candidate reference materials (RMs) have been prepared by our laboratory during 1992–1993. Fresh materials have been homogenized and spiked with known concentrations of pesticides representing compounds commonly used for strawberries and cabbages. The candidate RMs have been then freeze-dried, homogenized, bottled under a stream of nitrogen and stored frozen at −20°C. Homogeneity and stability of the candidate RMs have been studied during the storage period. Homogeneity of the candidate RMs for 5 g samples has been within 10%. Homogeneity and stability studies have been carried out using the conventional multiresidue method of Luke et al. [1]. Instrumental analysis have been performed by gas chromatography mass spectrometry (GC-MS) employing selected ion monitoring (SIM).

Keywords

Nitrogen Chromatography Physical Chemistry Analytical Chemistry Mass Spectrometry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Luke M, Froberg J, Doose G, Masumoto H (1981) J Assoc Off Anal Chem 64:1187–1195Google Scholar
  2. 2.
    Thier H-P, Stivje T, Specht W (1989) Fresenius Z Anal Chem 334:546–549Google Scholar
  3. 3.
    Zeisler R, Strachnov V, Perschke H, Dekner R (1993) Fresenius J Anal Chem 345:202–206Google Scholar

Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • Veli Hietaniemi
    • 1
  • Auli Kostamo
    • 1
  • Jorma Kumpulainen
    • 1
  • Juha-Matti Pihlava
    • 2
  1. 1.Food Research InstituteAgricultural Research Centre of FinlandJokioinenFinland
  2. 2.Institute of Plant ProtectionAgricultural Research Centre of FinlandJokioinenFinland

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