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Measurement uncertainty associated with overall migration testing.

L Castle1, R Macarthur, E M Mead

  • 1Central Science Laboratory, Department for Environment Food and Rural Affairs, Sand Hutton, York YO41 1LZ, UK. l.castle@csl.gov.uk

Food Additives and Contaminants
|June 16, 2004
PubMed
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Measurement uncertainty for overall migration testing in plastics was calculated using 10 years of proficiency data. Results show uncertainty estimates are within EU regulations, confirming the suitability of official European Standard methods for routine analysis.

Area of Science:

  • Food contact materials analysis
  • Analytical chemistry
  • Polymer science

Background:

  • Overall migration testing determines the amount of substances migrating from plastic food contact materials into food simulants.
  • Accurate measurement uncertainty is crucial for regulatory compliance and consumer safety.
  • Proficiency testing provides a robust framework for evaluating analytical methods and laboratory performance.

Purpose of the Study:

  • To calculate the measurement uncertainty for the overall migration methodology using historical proficiency testing data.
  • To evaluate the performance of laboratories participating in check sample exercises for overall migration.
  • To assess the suitability of official European Standard methods for routine overall migration analysis.

Main Methods:

Related Experiment Videos

  • Utilized 10 years of check-sample exercise results from a single laboratory for calculating measurement uncertainty.
  • Analyzed data from 12 sets of overall migration results into olive oil and 10 sets into volatile simulants.
  • Evaluated the performance of participating laboratories against established analytical tolerances.

    • Main Results:

    • Measurement uncertainty for migration into olive oil was estimated at +/- 2.6 mg dm⁻² (results 1.2–15.4 mg dm⁻²).
    • Measurement uncertainty for migration into volatile simulants was estimated at +/- 1.4 mg dm⁻² (results 2.1–13 mg dm⁻²).
    • A high percentage of laboratories (81% for olive oil, 87% for volatile simulants) met regulatory tolerances using official methods.

    Conclusions:

    • The calculated measurement uncertainties are within the limits set by European Union regulations.
    • Official European Standard methods for overall migration testing are deemed suitable for routine sample analysis.
    • The study confirms the reliability and applicability of standardized methods in the field of food contact materials.